I don't want to Hijack the other thread, so here goes.

My brakes have been vibrating for about 15K now. If I just touch the brakes in the 80mph range the whole car shakes like crazy. I had decided that it was probably the back brakes because I don't really feel it so much through the steering wheel as I do through the whole car. Also I noticed my back pads were pretty worn and my front brake pads are not worn hardly at all.

Someone mentioned that it could be a bad tire, but it doesn't seem likely to me that a bad tire would only vibrate when I am on the brakes. I have 26K on the original goodyear NCT's and they are not very worn at all and are wearing evenly. So I discounted that.

I replaced the rear rotors and pads, torqued the lug nuts to exactly 80ft-lbs. The only thing I didn't think to do was adjust the parking brake shoes out. I broke in the pads/rotors properly. My trip to my office and back is 100 miles each way on the interstate - usually cruising between 80 and 95mph. This morning I drove to work expecting the vibration to be gone - it is exactly the same as it was yesterday. Perfectly smooth until I touch the brakes then the car goes crazy and everything rattles.

Now I am concerned that after spending almost $500 to do the back brakes with OE parts what is my next step? Do I spend another $500 to do the front brakes which are barely worn or do I spend $xxxx to replace the tires that are barely worn? Maybe I should replace the rotors and just scuff the old pads and re-use them? Replace two tires? The car isn't even a year old yet. Could it be something else causing the shaking?

Interestingly when I was at the dealership the parts guy commented 'imagine that - a new G35 needing brakes', then mentioned that the FX's have the same brakes and he hardly ever sees people come in for FX brakes.

Suggestions?

 

Sounds like it may be the front rotors as well. They sound warped, not sure exactly. However, if you do need front brakes, give us a call!