kkslds

iTrader: (59)

I crawled under the back of my car messing around today and noticed the inside half of my rear tires is wore smooth. I had no idea they were that bad since the outside half looks fine. What could have made my tires wear like that on the rear? Thanks

Discount Tire

iTrader: (1)

Take it in for an alignment.

kkslds

iTrader: (59)

Uh its solid axle. Hows that work?

leadfoot4

iTrader: (1)

Do you have any kind of adjustable LCAs? Has the car ever been hit? Either of the LCAs bent?

WYATT318MOPAR

iTrader: (28)

Have the tires your currently running on the rear ever been on the front? If so they could have started wearing to the inside before you put them on the rear, once a tires starts an uneven wear trend it will keep it up even if put on the rear.

99345hp

^^^Thats the only way this could happen. Well I guess not the only way.

There is a way to change the alignment on a solid axle. You can change the camber and toe angles 1-2 degrees. You do this by heating the axle tube on the side you want to pull in. When the metal is heated and then naturally cooled it will shrink. Therefore changing the angle of the flange on the end of the axle tube. I have hooked up solid rear axle cars for a four wheel alignment and found toe and camber numbers way off from 0 degrees.

kkslds

iTrader: (59)

Tires have never been on the front. They are nitto drag radials. I put a new moser 12 bolt in and I have non-adj. umi lower control arms. As far as heat the only thing I did was welded on lca relocation brackets but that was just on the bracket not the tubes so i wouldnt think that was it. The more I looked at it its almost towards the center a little more than the inside. Could my tires have been over inflated sometime?

99345hp

I wasn't saying that was your problem, I was just saying there is a way to change the alignment on a solid axle. Its possible it was over inflation, but that should make them wear more in the center.

kkslds

iTrader: (59)

oh no its cool. i didnt mean it like that i was just lettin you know whats all went on. also its never been wrecked

500hpZ06

iTrader: (11)

Underinflated or defective tires, but unlikely if they are both wearing the same.
Worn outer axle bearings, or that rearend's 'mains' are not properly aligned with the ends of the axle tubes, but that should cause noise and maybe some metal in diff./fluid.
Back in the early LT1 days, when these 'fabbed' 12 bolt F-body conversion rearends started becoming more commonplace, they had some issues with noise/wear/alignment. I would think by now, with improved tech, they have solved most of those manufacturing problems/inconsistencies.