I tried running my tires at 50psi but found the ride really rough and that the decrease in traction was not worth the possible increase in mileage. My tires are load range E and have a max rating of 80psi but i cant imagine running them that hard just to pick up a small increase in mpg. At 50psi the rear end of my truck would slide out taking corners at moderate speed on wet roads, just dropping the pressure to 40 psi allows me to carry a lot more momentum in corners(probably saves more fuel than having hard tires and cornering slower) and there was no noticeable decrease in mpg going from 50psi down to 40psi.
I'm wondering how all of you that run your tires at such high pressures can drive safely in the rain, have fun avoiding an accident with over inflated tires on your car...
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