Tread wear

I bought new rear tires for my truck when I bought it I got some Cooper Discover STT Pros for the rear bc the old tires were bald I have had the tires for like a month and I've noticed tread wear on the inside already i have no idea what could be the cause of it if you know or have any opinion or thoughts let me know these tires were expensive and I'm trying to make them last Thanks

 

Excessive negative camber
Or
Excessive toe out if there is feathering as well

 

But it's just the inside of my rear tires so I can't be under inflation bc not both outside and inside are wearing

 

Axles+housings can be bent, how sure are you that it's straight?

 

Well the old tires wore the same way by the looks of them they only wore on the inside but I'm not sure how straight it is

 

If you can get your hands on a digital angle gauge and a piece of flat bar you can check the camber on the rear wheels. If it's too negative you may have a bent axle housing.

 

So if it is a bent axle housing what can be done to fix it new axle?

 

There are specialty shops that can bend it back into shape. Or a junk yard axle would work too. I would try to be sure to get one that was totalled from front end collision though. If your axle is indeed bent, you could end up replacing it with another bent one if you pull one from a truck that was in a rear end collision.

 

But I have a TRD with the rear locking diff