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Old 02-04-2019, 04:17 PM   #15
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help me to understand, I weight my coach and the steer axle tires had a weigh of 4320, do I take that number(4320) divide it by 2 and then look for that number(2160) on the tire chart and that is the weight for my steer axle tires?
Bear is mind load/inflation charts show the minimum air pressure to support the load. The recommended pressure is listed on the federal tire data plate in the MH to support its maximum GVW.
Lowering air pressure to obtain a softer ride is rather useless according to Goodyear.
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Old 02-11-2019, 08:50 PM   #16
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ya don't need no stinking chart's...….ok here is math for any 22.5 tire[works on all sizes] I'm gonna use random #'s.
your tire holds 4600#'s at 120 psi.. so 4600 divided by 120 =38.33#'s per psi.. so now you weighed your coach and you need to know psi for 3900#'s. so 3900 divided by 38.33 = 101.74psi. and good to go.....now some say lada da. but I have been to every darn chart and this math never gives you less than recommended by charts.. and always within like 3-4 psi over.. although my 11 yr old grand daughter understands[she's in advanced math] some tire experts just cant grasp the math..
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Old 02-12-2019, 08:59 AM   #17
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ya don't need no stinking chart's...….ok here is math for any 22.5 tire[works on all sizes] I'm gonna use random #'s.
your tire holds 4600#'s at 120 psi.. so 4600 divided by 120 =38.33#'s per psi.. so now you weighed your coach and you need to know psi for 3900#'s. so 3900 divided by 38.33 = 101.74psi. and good to go.....now some say lada da. but I have been to every darn chart and this math never gives you less than recommended by charts.. and always within like 3-4 psi over.. although my 11 yr old grand daughter understands[she's in advanced math] some tire experts just cant grasp the math..
This Goodyear pdf appears to disagree:

https://www.goodyearrvtires.com/pdfs..._nov112014.pdf
"The recommended infl ation pressures for your RV tires are indicated on the certification label of your RV or in your owner’s manual. Because RVs can be loaded with different configurations, the load on each tire may vary."
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Old 02-12-2019, 12:01 PM   #18
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i dont get it.. i read twice but cant find where it says only fill to plate specs[which is for max weight for axle]... they are meaning to weigh your coach by each wheel to not exceed max load for said tire.. it even says to put same pressure in both tires for the heavy side[which does not exceed load]..
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