Nand01

Hello, I have a 03 s2k with 92k on it. Recently I got new tires and ever since I've had shaking from the rear after going over 60 mph. Got the wheels rebalanced twice, I installed 2 piece spacers and helped a little but still shaking. The shake is pretty strong and my shift knob also shakes slot. Brakes are good I'm hoping someone has input. Maybe tranny mount? Car is lowered on tein Htech and Koni yellows. Thanks in advance.

NFRAP2

You stated that the problem began after installing new tires, so I would say that is the root of your problem. One or both of the new tires you had installed could be out of round.

billios996

you do any other work to the car around the same time as the tires?

Nand01

I"ve had the car for 2 months now, it originaly had 215/r17/45 all around cheap tires (nexen) so i went to a shop and upgraded to 235s (rear) and 225s (front) pireli tires. The car drove fine before the tires so once i noticed the shaking i did research and thought it possibly was that i needed spacers, so i got them and still have the shake* did some goodle search on out of round tires and that can possibly be it, going either today or tomorrow to change the rear tires and see if that works. billios996 i have not done anything else prior to this. I have noticed that click from the axles starting to happen but thats easy to fix and doubt it would cause the shake.

s2000maniac

Swap the CV axle buckets.

FluKy15

That is vibration under acceleration.

EOE

It's alcohol withdrawals, lay off the bottle.

But yes do wheel balance again, could be a bad tire too.

Nand01

Shake happens either accelerating or not. Im going with bad tire, will have them rebalanced for the 3rd time... or else have them swap tires. No alcohol withdrawal lol

s2klariat

Tire pressure the same in all 4? Possibly need an alignment?

PureFunction

meh im kind of in the same boat. already did the cv swap and that helped but...i still get a vibration...its just not nearly as bad now. I know the tires are balanced, doesnt even feel like it would be tires, more of a side to side shake. Have a rear bump steer kit...that + alignment after didnt help at all. i only feel this at 70+ mph.