{"id":20902,"date":"2022-09-02T01:10:00","date_gmt":"2022-09-02T08:10:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=20902"},"modified":"2025-08-28T16:32:54","modified_gmt":"2025-08-28T23:32:54","slug":"rusty-brake-discs-should-you-be-worried","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/rusty-brake-discs-should-you-be-worried\/","title":{"rendered":"Rusty Brake Discs: Should You Be Worried?"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column20902_74f764-bb > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column20902_74f764-bb > .kt-inside-inner-col,.kadence-column20902_74f764-bb > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column20902_74f764-bb > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column20902_74f764-bb > .kt-inside-inner-col{flex-direction:column;}.kadence-column20902_74f764-bb > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column20902_74f764-bb > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column20902_74f764-bb{position:relative;}@media all and (max-width: 1024px){.kadence-column20902_74f764-bb > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column20902_74f764-bb > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column20902_74f764-bb inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-ac9d41  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-6a6209\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading20902_d778e9-ae, .wp-block-kadence-advancedheading.kt-adv-heading20902_d778e9-ae[data-kb-block=\"kb-adv-heading20902_d778e9-ae\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading20902_d778e9-ae mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading20902_d778e9-ae[data-kb-block=\"kb-adv-heading20902_d778e9-ae\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading20902_d778e9-ae img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading20902_d778e9-ae[data-kb-block=\"kb-adv-heading20902_d778e9-ae\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading20902_d778e9-ae summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading20902_d778e9-ae\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It&rsquo;s normal for brake discs and rotors to develop rust, but too much of it can affect your vehicle&rsquo;s braking performance.<\/li>\n\n\n\n<li>Too much rust on the calipers can also cause them to stick and create drag.<\/li>\n\n\n\n<li>Replacing rusty brake discs is a part of proper brake maintenance. Keeping your braking system in check helps with road safety and reduces repair costs associated with brake parts.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The overall condition of your vehicle&rsquo;s braking system plays a significant role in ensuring your safety on the road. The system consists of several individual components that are crucial to its operation.<\/p>\n\n\n\n<p>Most brake components are made from tough and durable metals, such as steel and cast iron. These materials enable parts like the <a href=\"https:\/\/www.carparts.com\/brake-disc\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"brake discs\">brake discs<\/a> and <a href=\"https:\/\/www.carparts.com\/brake-caliper\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"calipers\">calipers<\/a> to last for a long time before they need to be replaced.<\/p>\n\n\n\n<p>However, when exposed to unfavorable conditions, metal components may become vulnerable to rust and corrosion.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where&rsquo;s the Rust?<\/h2>\n\n\n\n<p>Brake rotors on vehicles that are driven regularly won&rsquo;t rust. If a regularly driven vehicle has any rusty rotors, it usually indicates a problem with a disc caliper or perhaps a proportioning valve, if one or more rear rotors are rusty on a vehicle that is driven often.<\/p>\n\n\n\n<p>Vehicles that are parked for a few weeks will develop rusty rotor braking surfaces, and with that rust, there will be brake noise until the rust wears off.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/a-short-course-on-brakes\/\" target=\"_self\" rel=\"dofollow\" class=\"u11a95b16e08851400606797aa0010554\"><style> .u11a95b16e08851400606797aa0010554 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .u11a95b16e08851400606797aa0010554:active, .u11a95b16e08851400606797aa0010554:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u11a95b16e08851400606797aa0010554 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u11a95b16e08851400606797aa0010554 .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .u11a95b16e08851400606797aa0010554 .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u11a95b16e08851400606797aa0010554:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">A Short Course on Brakes<\/span><\/div><\/a><\/div><\/div>\n\n\n<style>.kadence-column20902_e3def4-cd > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column20902_e3def4-cd > .kt-inside-inner-col,.kadence-column20902_e3def4-cd > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column20902_e3def4-cd > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column20902_e3def4-cd > .kt-inside-inner-col{flex-direction:column;}.kadence-column20902_e3def4-cd > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column20902_e3def4-cd > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column20902_e3def4-cd{position:relative;}@media all and (max-width: 1024px){.kadence-column20902_e3def4-cd > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column20902_e3def4-cd > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column20902_e3def4-cd kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>#kt-layout-id20902_5d49b5-b8 > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id20902_5d49b5-b8 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id20902_5d49b5-b8 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:var( --global-kb-row-default-top, 25px );padding-bottom:var( --global-kb-row-default-bottom, 25px );padding-top:20px;padding-bottom:20px;padding-left:16px;padding-right:32px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}#kt-layout-id20902_5d49b5-b8 > .kt-row-layout-overlay{opacity:0.00;}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-bottom-sep{height:100px;}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-bottom-sep svg{width:100%;}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-top-sep{height:100px;}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-top-sep svg{width:100%;}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){#kt-layout-id20902_5d49b5-b8 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){#kt-layout-id20902_5d49b5-b8 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){#kt-layout-id20902_5d49b5-b8 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){#kt-layout-id20902_5d49b5-b8 > .kt-row-column-wrap{padding-top:28px;padding-bottom:25px;padding-left:16px;padding-right:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-bottom-sep{height:px;}#kt-layout-id20902_5d49b5-b8 .kt-row-layout-bottom-sep svg{width:%;}}<\/style>\n<style>.kadence-column20902_55c1b0-4e > .kt-inside-inner-col{display:flex;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col{min-height:45px;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col,.kadence-column20902_55c1b0-4e > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col > *, .kadence-column20902_55c1b0-4e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column20902_55c1b0-4e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column20902_55c1b0-4e{position:relative;}@media all and (max-width: 1024px){.kadence-column20902_55c1b0-4e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column20902_55c1b0-4e > .kt-inside-inner-col > *, .kadence-column20902_55c1b0-4e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column20902_55c1b0-4e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column20902_55c1b0-4e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col > *, .kadence-column20902_55c1b0-4e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column20902_55c1b0-4e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column20902_55c1b0-4e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column20902_55c1b0-4e kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image20902_ac60a0-af.kb-image-is-ratio-size, .kb-image20902_ac60a0-af .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image20902_ac60a0-af.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image20902_ac60a0-af .kb-image-is-ratio-size{align-self:unset;}.kb-image20902_ac60a0-af figure{max-width:45px;}.kb-image20902_ac60a0-af .image-is-svg, .kb-image20902_ac60a0-af .image-is-svg img{width:100%;}.kb-image20902_ac60a0-af .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image20902_ac60a0-af\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column20902_c4cb65-1b > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column20902_c4cb65-1b > .kt-inside-inner-col,.kadence-column20902_c4cb65-1b > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column20902_c4cb65-1b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column20902_c4cb65-1b > .kt-inside-inner-col{flex-direction:column;}.kadence-column20902_c4cb65-1b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column20902_c4cb65-1b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column20902_c4cb65-1b{position:relative;}@media all and (max-width: 1024px){.kadence-column20902_c4cb65-1b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column20902_c4cb65-1b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column20902_c4cb65-1b inner-column-2 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\n            In some cases, if a vehicle drove through a puddle right before being parked for a few weeks (think airport), some of the water can get trapped between the pads and the rotor and make a single rusty patch that will cause a strange feel during stopping that is sort of similar to a brake pulsation.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div>\n\n\n\n<p>The other brake components are going to have some rust by default, particularly in cold northern states where the roads are salted in the winter.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"575\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/worn-out-car-backing-plate-and-park-brake-shoe-1024x575.jpg\" alt=\"worn out car backing plate and park brake shoe\" class=\"wp-image-72610\" style=\"width:1024px;height:575px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/worn-out-car-backing-plate-and-park-brake-shoe-1024x575.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/worn-out-car-backing-plate-and-park-brake-shoe-300x169.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/worn-out-car-backing-plate-and-park-brake-shoe-768x432.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/worn-out-car-backing-plate-and-park-brake-shoe-1536x863.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/worn-out-car-backing-plate-and-park-brake-shoe-150x84.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/worn-out-car-backing-plate-and-park-brake-shoe.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">This is not a disc rotor, but a backing plate. The brake rotor has been removed for replacement.. Notice the completely worn out park brake shoe right behind the wheel hub. This car came from New York and was brought in to have work done. The entire car had this same kind of damage. In addition to what you see here, all the brake lines had to be replaced on this vehicle. | Image Source: Richard McCuistian.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Are Rusty Brake Discs a Problem?<\/h2>\n\n\n\n<p>While doing your regular brake maintenance check, you start to notice rust on some of your brake components. What should you do?<\/p>\n\n\n\n<p>Rusting in some parts of the vehicle&rsquo;s braking system is normal. However, if you notice <em>extensive<\/em> rusting in the brake discs and calipers, they may need replacement.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Rust on Brake Discs<\/h3>\n\n\n\n<p>It&rsquo;s common for brake discs (or rotors) to rust. For instance, the surface of these discs may be covered with a thin film of rust if you leave your vehicle parked outside during heavy snowfall or rain.<\/p>\n\n\n\n<p>Rust that only exists on the surface of the brake discs is no cause for alarm. Surface-level rust usually goes away on its own once you drive your vehicle and use your brakes.<\/p>\n\n\n\n<p>However, it&rsquo;s a different story if you notice extensive rusting on your brake discs. This may affect your vehicle&rsquo;s braking performance. For instance, accumulated rust on your discs can reach your brake pads, causing them to wear out faster.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/blog\/your-guide-to-shopping-for-new-brake-rotors\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replace\">Replace<\/a> severely rusted brake discs right away to prevent such issues.<\/p>\n\n\n\n<p>Worn-out brake discs and pads may also significantly affect the efficiency of your disc brake system. You may notice <a href=\"https:\/\/www.carparts.com\/blog\/grinding-noise-when-driving-causes-what-to-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"grinding noise\">grinding noise<\/a> coming from your wheels once your brake discs and pads have become severely rusted. More commonly, that kind of noise comes from pads that have given up all their lining so that the metal pad backing is grinding into the rotor.<\/p>\n\n\n\n<div class=\"rsi-card\">\n  <div class=\"rsi-thumb\">\n    <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/d_noimage.jpg\/b_white\/e_sharpen,e_auto_brightness,e_auto_contrast\/f_auto\/q_auto:eco,dpr_auto\/w_873,h_873,c_pad\/images\/set-stpc27110095drs2_1\">\n  <\/div>\n  <div class=\"rsi-info\">\n    <span class=\"rsi-title\">Your Guide to Shopping for New Brake Rotors<\/span>\n    <span class=\"rsi-desc\">Find out which brands of brake discs are the best on the market with this guide. Compare pros and cons, and choose the best rotors for your vehicle.<\/span>\n    <a href=\"https:\/\/www.carparts.com\/blog\/your-guide-to-shopping-for-new-brake-rotors\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Discover Your Options\">Discover Your Options<\/a>\n  <\/div>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">Rust on Calipers<\/h3>\n\n\n\n<p>Aside from severely rusty brake discs, another brake component that&rsquo;s vulnerable to rust is the brake caliper. Are rusty brake calipers a problem? Yes, they are, so don&rsquo;t disregard extensive rust in your calipers. Of course, nobody usually looks at calipers unless they&rsquo;re doing the brakes anyway &ndash; and steel calipers frames will rust unless they&rsquo;re painted, even if nothing is wrong with them. That being said, if the rust is in the wrong places and is bad enough to prevent the caliper from working right, well, that&rsquo;s a problem.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/how-to-diagnose-faulty-front-brake-discs\/\" target=\"_self\" rel=\"dofollow\" class=\"uaf8d331e74cf11ca14ef4dc0aca262f8\"><style> .uaf8d331e74cf11ca14ef4dc0aca262f8 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .uaf8d331e74cf11ca14ef4dc0aca262f8:active, .uaf8d331e74cf11ca14ef4dc0aca262f8:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .uaf8d331e74cf11ca14ef4dc0aca262f8 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .uaf8d331e74cf11ca14ef4dc0aca262f8 .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .uaf8d331e74cf11ca14ef4dc0aca262f8 .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .uaf8d331e74cf11ca14ef4dc0aca262f8:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">How to Diagnose Faulty Front Brake Discs<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<p>While minor surface rust is not a problem, excessive rust on your caliper&rsquo;s slides, bushings, and pins may prevent a &ldquo;floating&rdquo; caliper from centering itself over the rotors. Because of this, your pads may wear out unevenly and cause unreliable braking.<\/p>\n\n\n\n<p>Keep an eye out for rusty brake calipers during your regular maintenance intervals.<\/p>\n\n\n\n<p>Severe rusting will cause a floating caliper to stick, which can then cause your brake pads to drag. That&rsquo;s because the caliper may not allow enough movement for the brakes to be released.<\/p>\n\n\n\n<p>Many vehicle manufacturers still use steel <a href=\"https:\/\/www.carparts.com\/brake-caliper-piston\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"caliper pistons\">caliper pistons<\/a>, which are plated with nickel and chrome to achieve the desired surface finish. Unlike phenolic caliper pistons (which are natural thermal insulators), steel pistons may transfer heat from the brake pads to the <a href=\"https:\/\/www.carparts.com\/blog\/low-brake-fluid-symptoms-plus-when-to-change-and-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"brake fluid\">brake fluid<\/a>.<\/p>\n\n\n\n<p>The surface finish of these pistons plays a big role in how effectively it functions.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"How to Clean and Paint Brake Calipers EASY+QUICK\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/s2WMWhjX1no?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Since these pistons are made of steel, it&rsquo;s sometimes unavoidable for the material to rust.<\/p>\n\n\n\n<p>Any surface pitting may cause the piston to stick, affecting the efficiency of your brake system.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Important is Brake Maintenance?<\/h2>\n\n\n\n<p>Here are some of the benefits of <a href=\"https:\/\/www.carparts.com\/blog\/brake-maintenance-checklist\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"proper brake maintenance\">proper brake maintenance<\/a>:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Improves the Efficiency of Your Braking System<\/h3>\n\n\n\n<p>Replacing severely rusted brake components will ensure that your brakes are in optimal condition. It also enhances stopping ability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Helps with Road Safety<\/h3>\n\n\n\n<p>A properly functioning brake system will help you avoid road accidents. If you&rsquo;re confident that your system is well-maintained, you can focus more on the road, resulting in a safer and hassle-free driving experience.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reduces Future Repair Costs<\/h3>\n\n\n\n<p>Severely rusted brake discs and\/or calipers may damage nearby brake components as well. Following your vehicle&rsquo;s regular brake maintenance schedule will help you save more in the long run, as it&rsquo;ll prevent issues in multiple brake components.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Does a Disc Brake System Work?<\/h2>\n\n\n\n<p>To take care of your braking components properly, it helps to understand <a href=\"https:\/\/www.carparts.com\/blog\/a-short-course-on-brakes\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"how the system works\">how the system works<\/a> as a whole.<\/p>\n\n\n\n<p>Each wheel has its own brake mechanism and hydraulic device. All four wheels are connected to your brake pedal.<\/p>\n\n\n\n<p>A typical disc brake mechanism consists of a brake disc, a brake pad, and a brake caliper. Once you put pressure on your brake pedal, hydraulic fluid flows from the master cylinder to the brake caliper. The latter then squeezes the brake pads against the brake disc, creating the friction needed to slow down your wheels.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/how-to-replace-brake-discs\/\" target=\"_self\" rel=\"dofollow\" class=\"u2a0c55a3d57c00e040f2f73c8657341c\"><style> .u2a0c55a3d57c00e040f2f73c8657341c { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .u2a0c55a3d57c00e040f2f73c8657341c:active, .u2a0c55a3d57c00e040f2f73c8657341c:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u2a0c55a3d57c00e040f2f73c8657341c { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u2a0c55a3d57c00e040f2f73c8657341c .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .u2a0c55a3d57c00e040f2f73c8657341c .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u2a0c55a3d57c00e040f2f73c8657341c:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">How to Replace a Brake Disc<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<p>Most modern vehicles rely on disc brakes, but there are some that still use drum brakes for their rear wheels or emergency brakes.<\/p>\n\n\n\n<p>Since all braking components are vital to the operation of your vehicle, any severely rusted component should be replaced right away.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is a Brake Disc and Caliper Kit and When Do You Need It?<\/h2>\n\n\n\n<p>If your vehicle&rsquo;s brake disc and calipers are severely rusted, it may be time to get a <a href=\"https:\/\/www.carparts.com\/brake-disc-and-caliper-kit\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"brake disc and caliper kit replacement\">brake disc and caliper kit replacement<\/a>. This kit is usually sold in a 2-wheel or 4-wheel set.<\/p>\n\n\n\n<p>A brake disc and caliper kit usually costs around $250 to $1000, depending on the brand and the components included inside the kit. There are many aftermarket brands that sell high-quality brake disc and caliper kits, so you will surely find an excellent one for your vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What to Consider When Buying a Brake Disc and Caliper Kit<\/h2>\n\n\n\n<p>Due to the surplus of brake disc and caliper kits on the market, it may be difficult to pick the best one for your vehicle. Consider the following factors to narrow down your options:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Application<\/h3>\n\n\n\n<p>To guarantee fit, always check the kit&rsquo;s compatibility with your ride. There are many aftermarket brands that sell model-specific brake disc and caliper kits, so you will surely find one for your vehicle.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust-1024x683.jpeg\" alt=\"brake disc little rust\" class=\"wp-image-21040\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust-1536x1024.jpeg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust-150x100.jpeg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-little-rust.jpeg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">To guarantee fit, always check the kit&rsquo;s compatibility with your ride.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Cost<\/h3>\n\n\n\n<p>High-quality brake disc and caliper kits do not necessarily have to be expensive.<\/p>\n\n\n\n<p>There are many replacement kits that can match the quality of their original equipment manufacturer (OEM) counterparts at reasonable prices.<\/p>\n\n\n\n<p>You don&rsquo;t have to break the bank just to buy one for your vehicle.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Brand<\/h3>\n\n\n\n<p>When buying brake components, choose the brand you trust the most. If you don&rsquo;t have a brand preference, we recommend reading product reviews online or seeking professional advice from a mechanic.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>The overall condition of your vehicle&rsquo;s braking system plays a significant role in ensuring your safety on the road. The&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/rusty-brake-discs-should-you-be-worried\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":21039,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[3749,52],"tags":[841,918,2269],"ppma_author":[2607,2985],"class_list":{"0":"post-20902","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-braking-system","8":"category-diy","9":"tag-brake-caliper","10":"tag-brake-disc","11":"tag-brake-disc-and-caliper-kit","12":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rusty Brake Discs: Should You Be Worried? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Rusty brake discs and calipers may affect your vehicle\u2019s braking performance. Here&#039;s what you should do if you have rusty brake parts.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carparts.com\/blog\/rusty-brake-discs-should-you-be-worried\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rusty Brake Discs: Should You Be Worried? - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Rusty brake discs and calipers may affect your vehicle\u2019s braking performance. Here&#039;s what you should do if you have rusty brake parts.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/rusty-brake-discs-should-you-be-worried\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-02T08:10:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-28T23:32:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/01\/brake-disc-rusty-scaled.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1365\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"CarParts.com Research Team, Richard McCuistian, ASE Certified Master Automobile Technician\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/CarPartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"CarParts.com Research Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/rusty-brake-discs-should-you-be-worried\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/rusty-brake-discs-should-you-be-worried\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"1651\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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