I just got my H&R springs installed and they look great. Drive smooth but when I do 2nd, 3rd or 4th gear pulls to redline I get a shake/vibration through the entire body. Cruising around I dont feel it. I'm waiting a few weeks to get aligned. Would the aliment cause that or maybe the wheel bolts weren't torqued properly. Any one else have this problem with their new springs? springs?

 

Some people get it some people don't after lowering. Looks like you got it. There are many discussions about this in the suspension forum. I'd investigate there are see what's up.

 

Thanks. I just saw this thread after I made my post.

https://www.northamericanmotoring.co...installed.html

 

I will still get the alignment.

 

Yea I'm going to do that. It seems a little better today after I drove it some more.

 

Several threads on "weird vibration"

Best guess as of now, this is due to a harmonic induced vibration in the half shafts. It varies car to car. Only fix is to put it back stock. It would be an interesting experiment to play with compliant mass dampers on the half shafts and see if a fix can be found.