Quote:
Originally Posted by m3alabama
Your tires will also wear much quicker if you have low pressures but drive 100 plus mph frequently. The heat that goes with the substantial increase in deformation really eats the tread away. Plus the deformation KILLS gas mileage.
I settle on 40psi on all tires, all the time. I drive mostly from city to about 80.
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Correct, that constant deflection is not symmetrical in the sense of energy exchange. Hysteresis in the process means the tire heats with the working (deflection/distortion) beyond its ability to shed heat and the greater the amount and the faster the cycle (rotation) the more heat buildup the tire has to endure.