[Diesel_Dave]

My max sidewall is 80 psi. If I remember correctly the recommended pressures are 55 psi for the front, 45 psi for the rears. If I ever carry a heavy load, I'd probably decrease my pressures a little, but most of the time I run unloaded or only lightly loaded. It's been about 3 months (3,500 mi) since I bumped up my pressures from 60 to 70. So far I haven't noticed any unusual tread wear. I probably should take another close look to make sure.

80 psi max sidewall seemed like a lot to me when I first looked at it as well, but I guess I just have "stronger" tires. My wife has 17-inch tires on her Blazer and her max sidewall is only 35 psi. I guess it just depends on the tire.