Inner Tire Wear

After 250,000 miles I started getting excessive wear on the inside of my left front drive tire. Enough that we had to replace the two drives because I no longer had any depth on the outer tread. Put new drives on rear axle and did a real rotation from rear to front. 5000 miles and already showing inner wear on left front drive tire. No help from R/A, tractor shop, or tire bay other than "you must be running at the wrong pressure." Well, I did 220,000 of those 250,000 miles at 120 PSI with no problem until the last 7,000 miles. Ran the 5,000 miles after rotation and 3 axle alignment at Prime's suggested 100 PSI and still see this inner wear on the same position. I'm thinking bearing, but Prime is blowing that off. Anyone else dealt with this? Comments and suggestions would be most appreciated! Got super singles on a 2011 Cascadia. Thanks.

 

Thanks Bender. Since I'm a company driver, it's kind of dependent on what they'll authorize, and the shop guys have been less than helpful to this point. Good to get some reinforcement behind my opinion though. Again, thanks!

 

Curious as to why you think running a tire at suggested max PSI would cause it to "blow up?" Also, if it were simply a "normal" wear problem with singles, why did it only show up during the last 7000 miles of a 250,000 mile life cycle? Why only at the one position and not the other three? Informed suggestions only, please.

 

Prolly what I'll end up doing. Just hoping someone might have had same problem and found a fix. Thanks for the reply and honest assessment.