![]() ![]() This condition is almost always caused by surface rust, and it's not a safety concern. Rust. A common concern technicians hear is that drivers hear their brakes squealing or grinding when they first start driving in the morning, but that it goes away once the car warms up. This condition might lead to a cracked rotor, but also the hot spots could be felt by drivers as a pulsation while braking.Ĥ. If they aren't able to properly dissipate heat, your rotors may be left with a blue ring or spots. Deep grooves. Like dished rotors, deep grooves are a problem because they don't provide your pads a smooth, flat contact area, and this reduces your braking performance.ģ. (Make sure your rotor isn't hot before you touch it!)Ģ. This is generally undetectable at a glance, although you might feel a lip on the outer edge of your rotor. Dishing. As the name implies, rotors can wear unevenly in such a way that they become shaped like a dish. Here are some common problems that might affect the performance or integrity of your rotors.ġ. Not only is this best practice for keeping peak brake performance, it's a real time saver when you compare the five minutes it takes to pop on new rotors versus waiting on a shop to resurface them. Because brakes are one of the most important parts on your vehicle, a good rule of thumb is to replace your rotors whenever you replace your pads. How do you know when it's time to replace your rotors?īrake rotors wear in a variety of ways, and damage is not always easy to detect. ![]()
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