Cocked Bearing, Bent Hub, or Something I Haven't Considered?
 

04 GT is at the dealership for a noise hunt. The rear of the car was making Micheal Bay-esque Transformer noises under certain conditions (but not consistently)


I suspected that the issue may be a wheel bearing, but it doesn't sound like an audible "click" and doesn't do it at low speed. The dealer suspended my car, and put it in gear, and it was noted that the rear passenger side tire was wobbling while spinning. They want to replace the hub assembly and the wheel bearing.


Could it be that the bearing has become cocked? Could it be a control arm issue they are missing? What am I not considering?


Amplifying info - apparently this issue has existed for some time - and I only noticed it when I went to Tein Street Basis coilovers...


Thanks in advance...

What does the noise sound like? Usually a bearing is a grinding noise or a squeal

But that could also be a brake noise? ;)

The first thing you do is put the wheel assembly on a balancer and see if it's true. Maybe they did, but it's not stated. Kind of unlikely that the bearing is cocked or moving around without a lot of noticeable slop/looseness.

The dealer mentioned that the wheel feels solidly mounted, and demonstrates no slop, relative to the bearing. I suggested checking the lower forward link mounts for cracking, as I read that these are the built-in give point. For the love of Pete, I hope those guys think to check the wheel!


I tried to describe it as a "transformers" noise... "warp-warp-warp" Which gets louder when I load the driver's side suspension (accelerating in a right turn.) I put brakes on it maybe a thousand miles ago and the noise-causing components with an adequate amount of grease, so I tend to think it is not break related. I really thought it was related to the alignment of the wheel, but the alignment turned up fine on two occasions - probably because there isn't slop in the bearing, as I mentioned to Team.


I gave the dealership the go-ahead to fix it, as I don't have the time to do it myself... I'm going to be SO pissed if it's a wheel issue and I've spent a bunch of money in the wrong direction. Thanks for the reply. You two never disappoint!