Ok guys, here's a good one. I just got new Eagle Alloy 058 17x10 on BFG 35x12.50x17 KT Mudders. The lower ball joints were replaced at the same time and the front end alligned. Going down the road at 55 it will go around a right hand curve all by itself. I took it back to the shop they switched the right tire to the left and vice versa and the same result. They put the factory wheels and tires back on and it was perfect. No pull at all. They checked the allignment and it was within specs. They put the new package back on and same pull to the right. So today I took it to another one of their stores with a new high tech system, same result. The allignment was right on but it still pulled hard right. They can't explain it. One of their tech's came off with some B.S. about backspacing. How that could come into play I don't know. All I do know is I spent alot of money for a truck that used to drive perfect and now doesn't. Frustration is building........Any ideas?????

 

By adding a larger tire you have effectively magnified the Caster alignment angle. The angle is still the same, but the distance of the hypotenuse is larger making it feel greater.The right side caster needs to be pushed forward to compensate for this.

Tell the tech to push the right forward a little, like 1/2 to 1 degree.