blu

Hello all, I am a long time reader, and this is my first official post. Hopefully you guys can help me out.

I recently lowered my car one inch using new struts and H&R Springs. Upon installing the new springs/struts, I also had the car aligned as well as all four wheels and tires balanced. Now when i drive the car from 60 MPH, to 80 MPH, the car vibrates a great deal. I never had this problem when the car was at stock height. The wheels do not have any bends, and all four tires are evenly worn with no defects. The wheels also have the correct hub rings.

Any recommendations or advice would be greatly appreciated.

timmy0tool

iTrader: (7)

it would help to include the mileage and year of your car.

typical vibes are caused by worn out bushings and/or transmission mount. since you lowered the car, the suspension arm angle was changed and has probably caused more fatigue to the bushings.

bushings are to be torqued with the suspension components loaded (car resting on the ground, and not up in the air on jack stands). since the car is now lowered, you can try to reset the bushings by loosening the mounting points then re-tighten when the suspension is loaded (easiest done on a rack). since the car is old, i'm pretty sure you'll need new bushings regardless.

blu

The car is a 1999, and has 140,XXX miles

DSRxN8TE

After getting the alignment, does the car drive strait? I would also go back and make sure that the wheels are balanced. You did pay for it, might as well let them know that you are getting the shakes. Also follow Timmy's advice as well. Older cars will need a fixin.

PureDrifter

iTrader: (10)

The wheel balance is probably off. have it redone, the LS is sensitive to wheel balance being even a little off.