Sailun 637, they are 110 PSI load range G tires 4400 lb rated tires. I ran them for 6 years , they are good for high miles and heavy loads. I put 15000+ miles on them still had 1/2 the tread depth left. A friend of mine has Endurance GY tires the tread is very soft and your lucky to get 15,000 miles out of them .
Assuming your axle weight is less then 4000 lbs per tire you dont have to run 110psi. I set min to 100 psi cold every 2 months. I did a 17.5" wheel upgrade and still have 637 on those wheels.
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2015 42' Redwood RL38 Morryde IS , disk brakes, 1920W of solar with Victron everything,5 Battleborn, 2024 GMC DRW 3500HD ,60 gallons of fuel in the bed,Hensley BD5 air ride hitch 17.5" tire upgrade
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