I put the sailun son today, lifted the fifth wheel took all four tires off and went to get them mounted and balanced. The old tires Goodyear were not balanced from the factory. I have 8000 lb axles on the ms so the Goodyear tires were under rated but we were never close to gvwr. The sailun are an inch bigger diameter but I still have 3.750 between tires. That’s a work out putting 8 tires in the back of the truck then getting them back out to put back on. Greased the shackle bolts and bearings and checked brakes all looked good. The st 235/85r16 sailun tires have a 4400 lb weight rating so it should meet the standards now