FAQs—Mercedes Benz GLK350
How can I tell if it's time to replace the fuel filter on my Mercedes Benz GLK350? What are the symptoms of a bad fuel filter? What would happen if the bad filter isn't replaced right away?
A bad fuel filter can cause sluggish engine performance. It may drag and sputter and may lack power. MPGs may suffer as well. You can have all sorts of drivability issues and performance problems. If the vehicle continues to use a bad filter, this may affect other fuel system components, causing damage. The fuel injector may get clogged with dirt, debris, or other contaminants. This will affect fuel delivery, and may cut fuel supply from the engine. This is why you shouldn't think twice about replacing the fuel filter. Take note of the recommended service/maintenance schedule by the manufacturer.
What does the speed rating of the tires mean? Does it matter?
Speed ratings are used as a reference to make sure that the tires' speed capability would complement the top speed capability of the vehicle. Tires are designed to match a certain maximum speed. The speed rating of the tires should be appropriate for the vehicle. Aside from the speed rating, you should also take note of the load index and other tire specifications to find a set that would best fit the vehicle, based on its requirements, design, and performance.
What does the offset of the wheels mean? How does it differ to backspacing?
The wheel's offset indicates the distance from the hub mounting surface all the way to the wheel's centerline, which is measured in millimeters. Backspacing, on the other hand, is the distance from the hub mounting surface to the wheel's inside lip, which is measured in inches. When looking for new wheels, these are just some of the specs that you should take note of to find the right set for your vehicle.
How long do brake rotors and brake pads typically last?
There's no definite number or exact science in determining the lifespan of the brake pads and rotors. After all, there's a long list of factors to consider here, including your driving style, the road condition, the traffic situation, the brake system maintenance, and type of brake pads and rotors used. Most manufacturers and auto technicians, however, would say that the pads could last anywhere between 30,000 and 70,000 miles. Brake rotors naturally last longer. Sometimes, it would take three brake pad replacements before you have to install new brake rotors.
When should brake rotors be turned? Is it any different from brake rotor resurfacing?
After some time, brake rotors can get warped or develop uneven wear. When the surface of the rotors are no longer flat, smooth, and parallel, brake performance will suffer. To fix this, rotors may be turned. Rotor turning is the same as resurfacing and machining. With a lathe, some metal is shaved off the braking surface. This is much cheaper than replacing the rotors. This should be done when pads are replaced or during brake service for enhanced braking performance. However, the rotors can only be turned several times. A certain thickness should be maintained. As the rotors are turned multiple times, their lifespan will be shortened. They may also be more susceptible to brake fade and overheating.