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When you think about the different systems and parts that make a car safe to drive, the brake system is probably near the top of that list, if not at the top. The ability to bring your vehicle to a stop, whether it's a gradual soft stop as you come upon a red light or a quick stop to avoid a pedestrian, is one of the primary functions of a vehicle. It's known that a car will require brake service in time. Services you can expect include brake fluid changes, and the topic of today's article, brake rotor and brake pad replacement. While many people are aware that the latter two parts are critical, there is confusion regarding whether they need to be replaced at the same time. In this article, we'll take a look at brake rotor replacement and whether brake pads should be replaced simultaneously.

The Purpose of Brake Rotors & Pads

First, it's good to understand the purpose of each component and how they work together. The brake rotor, also known as the brake disc, is a flat, circular metal disc that is attached to the wheel hub. When you step on the brake pedal, the brake caliper applies pressure to the brake pads, which in turn clamp down on the brake rotors. This friction between the brake pads and the rotors is what slows down or stops the vehicle.

Over time, the brake rotors and pads will wear down from use. For example, it's possible for the rotors or develop uneven spots from constant contact with the brake pads. This can lead to decreased braking performance, such as vibrations or a pulsating brake pedal. Similarly, brake pads wear down through friction and need to be replaced periodically to maintain optimal braking performance.

Should I Replace My Brake Pads When I Replace My Rotors?

In this scenario, you have worn rotors but believe the brake pads might still be good. The answer to the question depends in part on the condition of the brake pads but there are other considerations you should factor into the decision.

If the brake pads are still within their serviceable limits and show no signs of significant wear or damage, it's true that they may not need immediate replacement. That said, it doesn't mean it isn't a good idea to replace them at the same time for other reasons.

• First, the brake rotor replacement process involves removing the brake pads from the caliper, so this is a convenient time to replace the brake pads.
• Second, if you don't replace the rotors and pads at the same time and the pads need to be replaced before those new rotors wear out, you will be in a situation where you need to make another appointment and pay again to have the bake pads done. That's additional time and money you probably don't want to spend if it can be avoided.
• Third, there is the argument that new brake rotors and new brake pads pair better. If there is uneven wear on the existing pads and they come into contact with the new rotors, it can lead to a decrease in the longevity of those rotors.

If you are in a situation where the brake pads also have a significant amount of wear or are also nearing the end of their lifespan at the same time that the rotors need a change, replace them together.

Should I Replace My Brake Rotors When I Replace My Brake Pads?

Let's say your brake rotors are good but your brake pads are at the end of their lifespan. Does it still make sense to replace these parts together?

In the event your brake pads need to be replaced first, it might make sense to wait until your next brake service to change the rotors. However, this will depend on their condition and, similar to the reverse situation, there are other factors to consider.

For the existing rotors to make it to the next service interval, they should be:

• Flat and smooth, without any bumps, grooves, or ridges (aka not warped)
• Free from a large buildup of rust
• Decently thick to last you awhile

If a rotor has a lip or is not smooth, replace it. Typically, this also means replacing the other(s), which may or may not be in a similar state.

You will also want to keep in mind some of the same considerations as the reverse situation:

• New rotors and pads pair better
• It may be more cost efficient and economical to have everything done at one service appointment

If your rotors are in good condition and have plenty of life to go, you might be good skipping replacement. Ask a service provider to tell you how your brakes look. Keep in mind that driving habits, like riding the brake or hard stops, can impact the life of these parts. So if your rotors are at their half life but you are one of those drivers who has  less-than-great tendencies when it comes to braking (or you let someone else drive who isn't as kind on the brakes), you might end up back sooner than you expect if both parts aren't replaced together. 

Some Final Thoughts on Brake Rotors and Pads

It isn't always necessary to replace the brake pads and brake rotors at the same time, but there are several items to keep in mind when determining if it makes sense for you to replace one type of part and not the other. If your brake rotors are worn, it is often sensible to replace the pads at the same time. For the inverse situation, you might be alright keeping the existing rotors and swapping out the brake pads. Consider the cost of having both done at once vs waiting and the condition of the parts.

If it's time to replace the brake rotors and pads in Wichita Falls, Texas, visit North Texas Automotive Service. We will provide the brake services you need to keep your vehicle's stopping power strong.