I always try and keep them inflated to what the maximum is. I think it will do a better job because you have less road resistance and you may even get a little better gas mileage. It just seems to handle better for me.
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2011 GMC 4X4 dually CC, 6.6 Duramax with Allison Transmission. Formally 2001 Montana,2007 3400RL Montana, presently 2018 3401RS Alpine.
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