MH tire PSI conflicting info
The Yellow capacities sticker in my 31' MH lists cold Max PSI at 85 lbs. for all tires, but the Ford chasis sticker lists max PSI at 82 lbs., at the same load capacities. I know it's not much differe...
Forum Discussion
"Max" pressure is what the MH manufacturers and the tire manufacturers consider the highest safe pressure for the installed tires. It bears no correlation to what is a good working pressure based on the load they're carrying.
Load your rig like you're going on a trip and go to the nearest truck scale. Weigh the front with the back wheels off the scale, then do the back wheels with the front ones off the scale. Once you have those numbers, divide by two for the front wheels and by four for the duallies. Then look up the tire manufacturer's recommended pressure for those loads for each tire. Those are the pressures you should use, but +/- 10% won't hurt much. In most rigs, side-to-side differences won't be critical, but if you really want to get scientific, weigh the right side and the left side with the opposite side off the scale pad.
Over-inflation for the load the tire is carrying will result in more wear in the middle of the tread than at the sides. Under-inflation produces the opposite. There's lots of leeway in this equation, so don't "get your knickers in a twist" as we Brits say.
Load your rig like you're going on a trip and go to the nearest truck scale. Weigh the front with the back wheels off the scale, then do the back wheels with the front ones off the scale. Once you have those numbers, divide by two for the front wheels and by four for the duallies. Then look up the tire manufacturer's recommended pressure for those loads for each tire. Those are the pressures you should use, but +/- 10% won't hurt much. In most rigs, side-to-side differences won't be critical, but if you really want to get scientific, weigh the right side and the left side with the opposite side off the scale pad.
Over-inflation for the load the tire is carrying will result in more wear in the middle of the tread than at the sides. Under-inflation produces the opposite. There's lots of leeway in this equation, so don't "get your knickers in a twist" as we Brits say.
