Bad tire wear ;/13 Expee

[fothco]

My rear 20" BF Goodrich tires are BALD in inside 1/2 . Why ? I tow a 23' RV but this is a recent issue . Did have a rear link replaced on both sides last Feb . Now this . Tried Sumatomo Tires but they are so soft . Any advice please ? fothco

 

[Adieu]

Alignment

Probably on account of not getting it after swapping rear suspension components