OK this vibration is really ticking me off. It starts around 55 and gets worse from there. It seem to be even worse as the car warms up. The car is a 01 1.8tq 5spd with 18in. ADR Wheels and I already balanced and road forced them on our state of the art machine and they show perfect. It doesnt make any noise and rotating the tires did nothing. The tires are good and new. Anyone that can offer any help please do!! Thanks!!!!!

 

do you feel the vibration in a certain place like right, left, front. rear.

its gotta be in the drive train


check the drive shaft. make sure its balanced right, even amount of washers and everything on it is bolted down tightly
that gave me probs on my nova.

 

Sounds like a bent rim. It'd have to be seriously screwed up to notice it when your balancing the wheels but you sure as hell notice a little bend at +55mph.

 

ive balanced wheels that were way off and never felt anything

this vibration doesnt sound like its in the wheel area.

gotta be engine/ drivetrain. most likely the latter