I agree the dealer should fix it. That's what warranties are for. However, if you've raised, lifted, levelled, or lowered it, that should be your problem not theirs.
My Ram is, as it was built. I added running boards and a cap on the bed. I only drive it when my 2yr old son is with me.
If it is a tire pull, switching them to the rear won't really do anything will it? Eventually they will get rotated back up front again, and have the same problem I'm having now, no?
