{"id":96772,"date":"2023-11-23T17:33:48","date_gmt":"2023-11-24T01:33:48","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=96772"},"modified":"2023-12-28T23:09:46","modified_gmt":"2023-12-29T07:09:46","slug":"speedometer-calibration-explained-common-questions-answered","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/speedometer-calibration-explained-common-questions-answered\/","title":{"rendered":"Speedometer Calibration Explained: Common Questions Answered"},"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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_07af3b-41 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_07af3b-41 > .kt-inside-inner-col,.kadence-column_07af3b-41 > .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-column_07af3b-41 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_07af3b-41 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_07af3b-41 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_07af3b-41 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_07af3b-41{position:relative;}@media all and (max-width: 1024px){.kadence-column_07af3b-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_07af3b-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_07af3b-41 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-832b65  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-6bc4aa\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_1aef83-c8, .wp-block-kadence-advancedheading.kt-adv-heading_1aef83-c8[data-kb-block=\"kb-adv-heading_1aef83-c8\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_1aef83-c8 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_1aef83-c8[data-kb-block=\"kb-adv-heading_1aef83-c8\"] 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-heading_1aef83-c8 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_1aef83-c8[data-kb-block=\"kb-adv-heading_1aef83-c8\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_1aef83-c8 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_1aef83-c8\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>A speedometer calibration test is a procedure that&rsquo;s meant to assess the accuracy of your ride&rsquo;s speedometer.<\/li><li>An inaccurate speedometer may need to be recalibrated or replaced.<\/li><li>Some factors that can affect speedometer readings include speedometer deterioration and collision-related damage.<\/li><li>You may also need to recalibrate your speedometer if you buy larger aftermarket tires.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>A <a href=\"https:\/\/www.carparts.com\/speedometer\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"speedometer\">speedometer<\/a> measures the speed of your vehicle. It provides real-time feedback to the driver through the vehicle&rsquo;s dashboard, allowing them to maintain legal speed while traveling. Also, data regarding vehicle speed is also important to the vehicle&rsquo;s on board computers.<\/p>\n\n\n\n<p>Your vehicle&rsquo;s speedometer needs to be calibrated properly to give accurate data output.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is a Speedometer Calibration Test?<\/h2>\n\n\n\n<p>A speedometer calibration test is a procedure that&rsquo;s meant to assess the accuracy of your ride&rsquo;s speedometer. The test is performed by using a dynamometer to measure your vehicle&rsquo;s actual speed. The results will then be compared to the speed displayed on your dashboard.<\/p>\n\n\n\n<p>It&rsquo;s important to note that most repair shops can&rsquo;t perform this procedure. That&rsquo;s because you&rsquo;ll need specialized equipment and computers to do this. Make sure to consult a professional before doing a speedometer calibration test.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>It&rsquo;s important to note that most repair shops can&rsquo;t perform this procedure. That&rsquo;s because you&rsquo;ll need specialized equipment and computers to do this.<\/p><cite><em>&ndash;<\/em><a href=\"https:\/\/www.carparts.com\/blog\/author\/anthonyharlin\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Anthony Harlin, ASE Certified Master Automobile Technician\">Anthony Harlin, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">What Is a Speedometer Calibration Report?<\/h2>\n\n\n\n<p>A report will be printed out once the speed calibration testing is done. This report will state if your ride&rsquo;s speedometer is off. It will contain details about the discrepancy between the speedometer speed and the actual speed of your vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recalibrating Your Speedometer<\/h2>\n\n\n\n<p>If your speedometer is deemed inaccurate, you&rsquo;ll need to have it recalibrated. A mechanic will usually adjust gear ratios and look into your vehicle&rsquo;s <a href=\"https:\/\/www.carparts.com\/blog\/euro-metric-and-p-metric-tire-sizes-explained\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"tire size\">tire size<\/a>. Certain electrical components may also need to be adjusted so that the speedometer reading will be aligned with your ride&rsquo;s actual speed.<\/p>\n\n\n\n<p>There are plenty of videos online on how to calibrate a speedometer. However, if you&rsquo;re not a seasoned DIYer, it&rsquo;s best to let a trusted mechanic do it for you.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Factors That Can Affect Speedometer Readings<\/h2>\n\n\n\n<p>Many factors can affect your speedometer&rsquo;s accuracy. Let&rsquo;s discuss each one in detail:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Speedometer Deterioration<\/h3>\n\n\n\n<p>Like any other device installed on your vehicle, your <a href=\"https:\/\/www.carparts.com\/blog\/five-reasons-why-your-speedometer-isnt-working\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"speedometer may become faulty\">speedometer may become faulty<\/a> over time. For example, the sensors inside a mechanical speedometer can malfunction, causing inaccurate speedometer readings. Faulty connections within the system can also lead to erroneous readings.<\/p>\n\n\n\n<p>In order vehicles, a cable is used to link the transmission to the instrument cluster. This cable can also wear out as the vehicle gains mileage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Road Accidents<\/h3>\n\n\n\n<p>An accident or a collision can affect your vehicle&rsquo;s health in so many ways. If you crashed your car recently, make sure to get your vehicle sensors and electrical components checked. Even if it was just a minor collision, it can cause one or more critical sensors to malfunction.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Aftermarket Rims and Tires<\/h3>\n\n\n\n<p>Is your speedometer off after installing new tires? This is perfectly normal. You&rsquo;ll need to have your speedometer recalibrated.<\/p>\n\n\n\n<p>Speedometers are calibrated according to the <a href=\"https:\/\/www.carparts.com\/blog\/what-size-wheels-fit-my-car-a-wheel-fitment-guide-for-beginners\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"size of your stock wheels\">size of your stock wheels<\/a>. So if you <a href=\"https:\/\/www.carparts.com\/blog\/are-wider-tires-better-than-narrow-tires\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"switch to larger tires\">switch to larger tires<\/a>, you&rsquo;ll need to make some adjustments. The speed of your wheels can vary depending on the size of your tires.<\/p>\n\n\n\n<p>In some modern vehicles, you can make adjustments in the computer settings using a bi directional scan tool.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Worn Tires<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/blog\/how-to-check-tire-tread-and-tire-pressure\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Worn tires\">Worn tires<\/a> can also affect your speedometer reading. That&rsquo;s because low tire pressure alters how your wheels rotate. Regularly <a href=\"https:\/\/www.carparts.com\/blog\/putting-air-in-your-tires-are-you-doing-it-right\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"check your tire pressure\">check your tire pressure<\/a> to avoid speedometer inaccuracies and prevent accidents on the road.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Is It Important to Get Accurate Speedometer Readings?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/11\/speedometer-calibration-1024x636.jpg\" alt=\"speedometer calibration\" class=\"wp-image-96774\" width=\"1024\" height=\"636\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/11\/speedometer-calibration-1024x636.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/11\/speedometer-calibration-300x186.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/11\/speedometer-calibration-768x477.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/11\/speedometer-calibration-1536x954.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/11\/speedometer-calibration-150x93.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/11\/speedometer-calibration.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Aside from getting a traffic ticket and paying fines, you&rsquo;re also risking your safety by not fixing an inaccurate speedometer.<\/figcaption><\/figure>\n\n\n\n<p>As a driver, you need to know your ride&rsquo;s actual speed because it can help you adhere to speed limits. Speeding, although unintentional, can still earn you a traffic ticket.<\/p>\n\n\n\n<p>Aside from getting a traffic ticket and paying fines, you&rsquo;re also risking your safety by not fixing an inaccurate speedometer. Exceeding safe driving speeds can lead to accidents while on the road.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Speedometer Readings as Evidence In Court<\/h3>\n\n\n\n<p>Another reason why accurate speedometer readings are important is the fact that they may be used as evidence in court&mdash;especially if you&rsquo;ve been charged with reckless driving. In some cases, inaccurate speedometer readings can be used as a mitigating factor in determining whether a driver is guilty or not.<\/p>\n\n\n\n<p>However, the results of a speedometer calibration test can still be questioned by experts. The judge will also consider supplementary evidence like witness testimonies and video recordings.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What&rsquo;s the Difference Between an Odometer and a Speedometer?<\/h2>\n\n\n\n<p>Although these two devices are related to each other, they function differently. A speedometer measures the actual speed of your vehicle. Meanwhile, an odometer measures the overall distance traveled by a vehicle. It&rsquo;s also important to note that changing an odometer reading is against the law.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Much Will a Speedometer Calibration Cost?<\/h2>\n\n\n\n<p>Expect to spend around $50 to $100 for a speedometer calibration.&nbsp; The actual price will depend on factors like the make and model of your vehicle and the labor costs in your area.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Much Does a Speedometer Replacement Cost?<\/h2>\n\n\n\n<p>If it&rsquo;s not an external issue, and your actual speedometer is faulty, you&rsquo;ll have to get a speedometer replacement.<\/p>\n\n\n\n<p>In most modern vehicles, the speedometer is integrated into the instrument cluster. It&rsquo;s repaired by a specialized shop that works on instrument clusters. It can also be replaced as an assembly.<\/p>\n\n\n\n<p>Expect to shell out anywhere between $50 and $200 for the speedometer. Some speedometers can be priced higher depending on the brand you choose and the make and model of your vehicle. Mechanics usually charge anywhere between $50 and $100 for this type of replacement.<\/p>\n\n\n\n<p>Remember that these prices are just estimates. You&rsquo;ll have to consider taxes and other charges as well.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Is It Okay to Use My Phone as a&nbsp; Speedometer Substitute?<\/h2>\n\n\n\n<p>There are several mobile apps designed to work as a portable speedometer. Some of these apps can work offline, so you don&rsquo;t have to be connected to wifi all the time.<\/p>\n\n\n\n<p>However, nothing can replace your actual vehicle speedometer. Your phone can die anytime, and it may leave you clueless about your actual speed while traveling.<\/p>\n\n\n\n<p>Instead of using your phone, it&rsquo;s more reliable to use a plug-in device that connects to your OBD2 port, capable of displaying various computer parameters on the screen. This solution is particularly useful if your conventional speedometer is not functioning correctly.<\/p>\n\n\n\n<p>You can use your phone as a temporary substitute in emergencies. However, you&rsquo;ll still have to recalibrate or fix your speedometer to stay safe while on the road.<\/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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>A speedometer measures the speed of your vehicle. It provides real-time feedback to the driver through the vehicle&rsquo;s dashboard, allowing&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/speedometer-calibration-explained-common-questions-answered\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":96773,"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":[52,3743],"tags":[156],"ppma_author":[2607,3742],"class_list":{"0":"post-96772","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-maintenance","9":"tag-speedometer","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Speedometer Calibration Explained: Common Questions Answered - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"A speedometer calibration test is done by a mechanic to measure the accuracy of your ride\u2019s speedometer. Learn more about it.\" \/>\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\/speedometer-calibration-explained-common-questions-answered\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Speedometer Calibration Explained: Common Questions Answered - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"A speedometer calibration test is done by a mechanic to measure the accuracy of your ride\u2019s speedometer. 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