my jeep pulls left with gas, right without gas, whats up?

[jaketime81]

I have a 4inch lift and 33's, a little movement is ok, but ever since I rotated the tires, I can almost lane change by letting of the gas. Its really bad. Whats my problem? I had my allignment done not to long ago and its pretty strait.

 

[jps4jeep]

Directional tires?

Perhaps the tires have a small amount of cupping to them?

 

[redrooster]

Check your air pressure. Sounds like one of them is lower than the other in the rear. This is more noticeable if you have a locker in the rear.