So I just got done installing a new set of AGX's with Tanabe springs. Everything went fine except I am having 2 problems. First thing I noticed was the the front driver side sits about a cm lower than the passenger side. Second problem is freeway speed vibrations. The car ride perfectly untill I get to around 50ish mph then it starts vibrating. the vibrations peak out at about 60 and tapers off untill i get to about 70 then the ride becomes perfect again.

So the question i pose to the forums is. What can cause one wheel to sit slightly lower than the other side and cause vibrations only between 50 and 70 mph?

 

Have the tires balanced, 1cm ride height difference is negligible.

 

yeah you are probably right, the tires are a bit old now. Also after getting a few miles on the new suspension the ride height evened out. just needed to settle in a guess.

 

For ***** and giggles,rotate the tires..see if the vibration goes away or moves to another location( like front to back) on the car.
If that happens you know it t tires or wheels for sure.