When running at max the tires will run the coolest and with least rolling resistance.
Now this next part is my opinion and only that:
At one time when Radial tires first hit the market, car manufacturers ran them soft for that smooth ride (I'm sure many of you remember the first radials you saw on a car looked like they were almost flat). But because of the sidewall flex and the road holding ability of radials running at that lower pressure created a dangerous situation (now radial run higher pressure than bias ply). If you went into a curve too fast, the tread would stick to the pavement, the sidewall would flex (like it was designed to do) but if you didn't have enough pressure to keep the bead on the rim you could roll the tire right off the rim (I have a friend who rolled his Pontiac Sunbird when he rolled a front tire off the rim). We all know the side forces applied to our tires on our rigs, so to me the same principle applies, you need sufficient pressure to ensure the bead stays intact on the rim during those sharp turns and those 90 degree turns getting into the prime CG spot.
Discaimer: This is my opinion, as I am not by any means a tire expert, you must follow your heart and do what you deem best for you and yours.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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