I recently changed my springs and tires on my 91. On my way to Vegas when I would pull off the freeway a heavy grinding vibration would come from the front. This only happens after going fast and then braking. Did I miss a bolt or something, the pads are in good shape. It never did this before i changed the springs and tires.<br><br> Thanks, Dominic

Chances are you didn't use a torque wrench on the lug nuts when you put the wheels back on. <br><br>The different levels of torque cause the brake rotors to warp and give you a vibration that you can feel through your steering wheel when you step on your brakes. At this point, that warpage may be small and you can only feel it at high speeds, but later on, you'll feel it even at lower speed stops. <br><br>Right now, I'd go retorque them to the proper specs and hope that the damage isn't severe enough to have caused permenant damage tot he rotors yet, or you'll be looking at getting a new set.

Well I took it for a drive on the freeway today and when I got home The right front rim was a lot hotter than the left one. There was also blue hazy stains on the rotor of the hot side. should I get that rotor turned? I still have not retorqued yet.<br><br> Thanks, Dominic<br> Northridge, CA 91T

Things like "turning the rotors" should be left until you are absolutely certain about what the problem is. They are the last thing to do because it is expensive and the process can't be repeated indefinitely before you have to buy new ones. If you get them turned without correcting the problem, there's a good you'll be back down at the machinists' again soon.<br><br>First, When you step on the brakes, does the car pull to one side? When you jack up the front end, do the wheels spin freely? If not, what is the problem, is it a dragging brake or an overtightened wheel bearing? Did you check the bolts holding the calipers on? It's possible that one of them has loosened and caused the caliper to get a little cocked. That would account for the heat, the grinding noise and the vibration.<br><br>The kind of heat you are talking about makes me think you've got a dragging brake pad, but it's impossible to determine over the internet. You have to get out there raise the car, spin the wheels and listen to what's going on. Brake work isn't especially difficult but you have to have the right tolerances.

TMKRUETZER thank you for the excellent reply. You have me thinking now. I will let you know the outcome after I try those scenarios out.<br><br> Thanks,<br> Dominic 91T<br> Northridge,CA