@lpher

I had my newish (2 months old) 19" wheels rebalanced yesterday...and it took care of 80% of the vibration... As ive had four different sets of wheels on the car since i bought it...im pretty shure the last 20% of it is related to the car itself...and not the wheels

perrychad

I HaVe 20x8 And 20x10 Iforged Classics And Goodyear Eagle F1 Tires And My Shakes Between 50 And 60mph Then About 85% Goes Away. Road Forced Balanced My Tires, New Balljoints, Tierods, And Rotors (upgraded To Big Brake Brembo) And Still Is There. I Doesnt Really Bother Too Much Because Im Between 50-60 Mph For A Couple Seconds

BCP43002

The machines were on wheels and they would roll them up to your car and attach them to your wheel.

I have the stock 17 chrome 5 spoke with the 960AS PP's and the stock 16's with Dunlop SP Winter Sports and have no problems other then flat spoting which happens because the car sits in my garage for a few days between driving. After a few miles, all is well.

Lexamatic

Road force balance and proper allignment are key. Beyond that you can try high speed on car balancing such as this. http://www.butlertire.com/services.asp

In my case the dreaded vibe was solved by getting the tires road forced correctly when they were first installed. Can't rule out the other usual suspects: ball joints, tie rods, control arm bushings, steering rack bushings. Some have also mentioned motor and tranny mounts as items to check.

Current wheel/tire setup is 18" G-spyders and PS2 rubber.

marshun

hmm i dont have that problem.

bushings might be a good idea for you guys with the vibration problem. at certain mph worn out bushings could warp a tad causing the alignment to go out of wack