Squeak noise from wheels when brake is appiled going in reverse

[cougarhunter]

So my Dad has a 2006 Toyota Camry. And I replaced the brake pads on all four wheels. I cleaned them with brake cleaner. The brake pads I used were ceramic pads. I replaced them in August. Now they are squeaking when ever he is backing the car up and is pushing on the brakes. The squeaking does not occur when braking in Drive. Are the rotors worn down or need to be re-surfaced? What do you guys think it could be? This squeaking has been going on now for a month or two.

[ItsMeJon]

That happens to me to i think its condensation. Im curious to.

[cougarhunter]

Originally Posted by ItsMeJon

That happens to me to i think its condensation. Im curious to.

I'm also wondering if it could be the calipers are not squeezing right. As when I compressed the calipers, some of them it was harder to press the cylinder in then others. And yes I had the cap off on the brake fluid reservoir.

[gdanaher]

It is the result of the wheel turning in one direction all the time and not both directions uniformly. The leading edge of the pad wears and the trailing edge of the pad tends to collect debris. You can cure this temporarily by driving in reverse in an empty parking lot and riding the brakes to burn off the crud, or pulling the brakes and grinding off the trailing edge of the pad. Eventually the problem will return because it is the nature of these things. In any event, if you don't spend a lot of time in reverse it is just an annoyance and not a real problem.

[cougarhunter]

Originally Posted by gdanaher

It is the result of the wheel turning in one direction all the time and not both directions uniformly. The leading edge of the pad wears and the trailing edge of the pad tends to collect debris. You can cure this temporarily by driving in reverse in an empty parking lot and riding the brakes to burn off the crud, or pulling the brakes and grinding off the trailing edge of the pad. Eventually the problem will return because it is the nature of these things. In any event, if you don't spend a lot of time in reverse it is just an annoyance and not a real problem.

So is it a result of the pads being cut by the manufacture on the edges so it slopes down towards the edge on both sides of the pad? Not sure if it was for the model of car or the brand, but I remember some of the pads that I've bought before were just one uniform pad that was not shaved on the ends.

[gdanaher]

No, you need to put it under a microscope to see the difference but it is there. A very slight amount of debris collects on the trailing edge as the pad wears down. It is unlikely that turning the rotors would do much to improve this over the long haul. Actually, driving it a few hundred feet in reverse and letting the brakes drag hard would do more to move some crud to the other end of the pad, but thin it might start squeeking when you drive worward! I just isn't a big deal really. How far does the car go in reverse? Out the driveway??

[cougarhunter]

Originally Posted by gdanaher

No, you need to put it under a microscope to see the difference but it is there. A very slight amount of debris collects on the trailing edge as the pad wears down. It is unlikely that turning the rotors would do much to improve this over the long haul. Actually, driving it a few hundred feet in reverse and letting the brakes drag hard would do more to move some crud to the other end of the pad, but thin it might start squeeking when you drive worward! I just isn't a big deal really. How far does the car go in reverse? Out the driveway??

Yeah just out of the drive way. That's all that I can remember him saying about it. Not sure if he mentioned also if it does it while braking in drive while going around corners.

Guess I could drive it backwards down the freeway while braking. That might solve the squeaking problem. Might cause others some squeaking problems of their own.

[BlackCamSe]

Normal with ceramics