Inside tire on the drives really bad

Different size to the outside tire or lower air pressure on the inside tires? Ironhead tires are prone to that even under perfect situations. I got a stack of ironheads that look just like that. Insides only. Put a different hight tire next to it it will eat itself in a matter of a thousand miles…

 

Yep. You can’t mix tires, when they’re side by side. Like tires need to be paired up; meaning a new tire needs to be next to a new tire or 14/32” tread depth needs to be next to another 14/32” tread depth of a similar casing.

Also, it looks like those are probably the original shocks to the truck. You definitely want to replace every shock, including the cab shocks. It’ll make a world of difference in controlling the suspension (keeping your tires on the ground) as well as the ride.

Lastly, have every tire spin balanced. That will stop suspension oscillations, which will also help to keep the tires on the ground and improve ride comfort.

 

Replace your shocks, all the way around.

then get a all axle alignment.

 

Looks like you've got a lot more tread on the outer tire than the inside one. The smaller tire needs to rotate faster to cover the same distance as the larger tire. Obviously because they're bolted together that's not possible so the smaller tire gets chewed up instead as it gets dragged along the pavement while driving.

 

Low air pressure on one of your inside drives for 20k miles before you fixed it

Misaligned axles

Worn out shocks

Freightliner running Chinesium drives

We've all got issues buddy, trying to minimize expenses.

I'll put a dollar on a dime you wear out steers, especially xline Michelin's twice as much as you wear out the outer rim cupping in your drives

 

What brand tires? But basically what everyone else has said….

 

Could be an under inflated tire or bad bushings.

 

I've had that happen on a truck that was almost new. Usually happens when coupled with a tire that has a different tread depth or that tire was underinflated.

Look at page 1 bottom right cupping scallop:

https://www.michelinb2b.com/wps/b2bcontent/PDF/Usual_Suspects_Drive_BFG_EN.pdf

 

Might not hurt to also check the bushings and everything else on your ears for your 8 bag suspension.