01Z0H6

iTrader: (63)

Man, maybe someone can help me here.?
My daily driven Z28 has 85K.
With that said, i have just put Khumo 712's all the way around (275/40/17) had the car aligned, had the tires balanced "twice"!
Car still drives choppy. Straight, but "bumpy". <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Shocks have never been replaced.(Decarbs)
Bought new set of the Bilstiens (they go on Friday) should this rectify my problem???
Rotors have approx 10K on them.
chime in & let me know! This has cost ALOT of $$$$$!! <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />

Chad00ws6

Are the tires are the only change that you have made and the vibration started after this? or have you done something else that you may be overlooking? Did the tire shop verify that the tires are good and that one dosen't have a bad belt or something? I would make them let me watch when they put them on the balancer and watch the top of the tire looking directly at the side etc.

I fought the same thing and somewhat still am but I believe that it was pinion angle for me. I spent alot of $$$ too hunting this. <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />

hope you find it.

01Z0H6

iTrader: (63)

Both rear rotors warped! Just bought these from Auto Zone 3 months ago! Should have a "lifetime warranty!! Guess i'll be paying them a visit. <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />

WMSuperSport

iTrader: (23)

That'll definitely cause a vibe!

I'm glad you figured it out. I also use Autozone rotors and pads for the "lifetime warranty". Hahaha. Cheap, too.

Wes