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Tire Pressure

On the way home from Foretravel of Texas in our new to us 2004 U270 3610 we weighed at a CAT scale. I am going to adjust the tire pressure using the Michelin tire pressure charts. The tires are new Michelin XZE 275R8022.5. The CAT scale provided the front axel and drive axel weights but did not provide individual wheel position weights. My question is when members put air in their tires do they go up to the next increment on the tire pressure chart to compensate for not knowing the actual individual wheel weights. Thanks,
Larry
Larry and Terry
Ex 2004 U270 36'

Re: Tire Pressure

Reply #1 –
I stepped up one increment on mine.

Next time you are weighting the coach, do the two axles, and then just drive around the scale/building and re-weigh with one side off the scales.  You might tell the office what you are doing when you first talk to them on the speaker.  There is sometimes a small additional charge for the double ticket, but then you will know.  We found less than 300 pounds differences side to side, so not going to worry, and move some things around inside.
Dave Cobb
Buckhorn Lake Resort The Club, #6202, Kerrville TX
check the map.  I do rent it out when I am traveling!
2001, U320, 36' #5887, in Kerrville, FT Club #17006, (7/23 to present)
2024 Jeep Grand Cherokee L, Summit, white
EX: 98 U295, 36' #5219, (mid door), (4/13-10/23)
EX: 93 U225, 36' (4/11 to 4/13)
 

Re: Tire Pressure

Reply #2 –
We've weighed three times and gotten consistent results. We've not yet measured individual wheel weights, so we use a pressure for axle weight a bit higher than the measured weight. All the scales we used had guides that did not allow enough offset to measure only one side.

I check pressure early in the morning when the temperature is the lowest and the coach has been at rest for several hours. Recommended pressures are for cold tires. (Corollary: don't let air out of hot tires to get to "recommended" pressures.)

Pressure will decrease 1-2 psi per 10F temperature drop in ambient conditions. (It's that old PV/T=k thing you may have studied in science class.) If ambient temperatures drop, the tire pressure will fall, also.
J D Stevens
1997 U295 CAI 36' Build #5085
2002 Subaru Outback
Motorcade 16869
Bellville, TX