Anybody noticing the rear tires wearing strangely

[Old Sailor]

I put auto tires on my crew. 4k miles on em and outside of the tires or half the tires on both sides are about bald. I'm thinking the a arms might need to be replaced with the right lengths.

 

[Napadude]

Mine is doing the only 2200 miles on dealer said it s normal. I dont think so.