Originally Posted by jdeadman

There are a couple reasons this can happen.

1) The car is unbalanced left to right
2) There is drag in the drivetain on one side of the car
3) your Chassis is Twisted (we call it tweaked)
4) Your spring pressures are lopsided or your ride height is different from left to right.
5) Steering trim not set correctly
6) Too much toe (in or out) on the front