Its more then likely an under inflation issue. Have they been rotated at all? if there was an alignment issue up front and then they were rotated back you will see that.
Also some tires just look that way. My kumhos look like that but when you put the depth gauge in there they are wearing just fine.
Originally Posted by OVERtheEDGE
havent seen that before. maybe a psi issue. i have seen shops offer a rear alignment. try that
you cant align the rear on a solid axle. Theres nothing to adjust.
Although they can check your rear alignment. You may have a bent axle.