So I just put all new control arms in my car. After the 6 hours and going of a somebodys DIY post I was reading another guys post on another sight. He said that you are spouse to tighten the bolts when the car is on the ground.
So my question is what happens if i tightened everything in the air. DO i need to go back and tighten everything while it is on the ground?

Any Help would be appreciated

99 a6 2.8