I installed My new 19" RH Pro J5 wheels yesterday and my JWT the other day and I have a very strange vibration. It is not a solid vibration though, But above 60mph the car will vibrate/shimmy for about 2 seconds then be smooth for 2 seconds, then vibrate, then smooth and so on. Has a rythm to it. Normaly when a tire is out of ballance the car will have a solid vibration, not like this. I was also told by the shop that installed my clutch that I was getting flat spots on my drivshaft and I may have felt the car vibrate or shimmy a little before, but I have not felt it before. I drove the car after the clutch install and before the wheels and felt nothing odd. But now the the tires are on, vibration. Any Ideas?

 

How do you get flat spots on your drive shaft? Maybe your driveshaft needs to be ballanced.

 

Agreed.....it sounds like a harmonic vibration. You may have lost a weight off of your driveshaft. That should be a warranty issue.