A few months ago I let my father take the Camaro in for inspection, mounting/balancing of my new wheels, and an alignment while I worked. I got the car back and noticed a subtle squeaking noise coming from the rear passenger wheel and thought I needed some disc brake quiet, nothing major.

It's been a while and the noise has only gotten worse. I'm getting a nasty intermittent grinding/squeak from the rear passenger wheel that occurs once every rotation. It gets much louder when braking and the pedal pulsates with the noise. The car vibrates at high speeds (50+ mph) and a loud rumbling is heard when I make right turns. I really don't think my disc brakes are to blame.

Possible causes:

Bad hub or bent axle -- Possible that my dad or a shop employee hit a curb, I haven't had any mishaps. Would explain the grinding/squeak pattern. How do I check these?

Warped rotor -- Doesn't explain the rumbling but would explain the pulsating brakes and squeak pattern.

Bad alignment -- I don't trust the shop... I need to compensate by turning the wheel 15 degrees counter-clockwise to stay straight. I feel like the car gets tossed around and the steering wheel suddenly tugs in different directions at times. I'm going to check for wear patterns when it stops raining. This doesn't really explain the grinding/squeaking.

 

sounds like you need to check out the rear brakes. while doing that look for any signs of something rubbing. maybe on the bump stops. what size of wheels and what off set.

 

The wheels are 17 x 9.5 (56mm offset) and the tires are 275/40/17. I'm going to get it up on jackstands in a few hours to look around.

 

the tires and rims should fit, look and see if the bump stops are outa wack. other than that the brakes, bearings or the rearend are all i can think of.

 

The rotor was cracked and warped. I went to Pepboys and bought a new one for $30 and installed it myself, problem solved.

 

No **** just 30 bucks? I need to get new rotors all around..

 

if the bumpstops are finished, how would that affect it to make that noise he describes?

 

I was thinking rubbing but mine were fine.

The squeak/grinding from my rear is gone and the brakes feel solid after replacing the rotor but the rumbling on right turns is still there. Sounds like it's coming from the front passenger side wheel. Happens every time I turn the wheel to the right. I'm thinking alignment.

I looked at the tread but it seems fine... I'm not sure if there would be any noticeable wear patterns because the tires have less that 1000 miles on them. There's nothing for them to rub against either. Maybe it's a hub but that seems unlikely.

 

does sound like a wheel bearing.

 

Maybe a wheel bearing, and/or your caliper slides are pitted/rough and/or not well lubed and are sticking...