Getting back to my original query, am I being led to believe that my wear problem might be resolved by increasing the tire pressures? That doesn't make sense to me at all, at all.
I check the tire pressures regularly (religiously) and have been using the same tire pressure gauge so maybe it is faulty and reading low. That would account for the actual pressures being higher than what it should be. I'll check that out next time I'm in my shop.

With a stock car on stock wheels and tires at stock curb weight, door sticker pressures usually work great.

Change the wheels and tires, reduce weight by several hundred lbs and everything changes. For wider racing tires I often run 5psi lower than sticker recommendations cold. The only way to really dial this in is with testing and an IR gun to check temps. Run several laps and check inner, center, and outer tread for temps. Wherever you find higher temps you will also tend to find higher wear.

Closer to higher pressures is the norm these days to get better fuel economy and tire life.

Highlander F150, those are trucks with high sidewalls, I'de say its not that critical where it really matters.. If your tire wear is even, don't fret it.. tire wear center tire only.. reduce.. more on the outside.. increase a bit


use Standard pressure for standard wheel / tire/weight
increase pressures for more weight on the axle
increase pressures when going with wider tires
increase pressures when installing lower profile tires



I would say that racing is a completely different story than the tires on his mums Highlander..Many more variables in the usage...

That's what I gathered after a few searches before I started this thread. None of the vehicles I need to monitor are driven much, so MPG and tire wear is a non-issue also. I was surprised at how high some of the search recommendations were to be honest ... Max PSI - 10%. I'm gonna go with sticker recommendation + 10% ... give or take. Hey .... I learned something ;).

Thanks guys!