2005 Winnebago Adventurer w/ Michelin 235/80 R22.5 tires.What tire pressure is recommended for a fully loaded motorhome?I have had several "suggestions" from RV repair facilities.

Tire pressure/weight tables are set up for actual weights.If you are close to your axle's GAWR, then use the PSI recommendation on the plaque likely near the driver's area that lists GAWR's, tire size and PSI.Longer term answer is get it weighted and set pressures accordingly.

Plus. Look at the tire sidewall.you will see a max. cold inflation pressure. Don't exceed that number.

wolfe10 wrote:Longer term answer is get it weighted and set pressures accordingly.There is a better way.Buy a TPMS, and set the pressure by it. We found that running with the pressure at the suggested pressure by weight caused the tires to heat and go over the recommended max pressure by the manufacturer. We increased the pressure, and found the tires did not heat as much and stayed under the max pressure. So we increased it more and found it heated less, did it again, no change, and that is where run our tires. 10X22.5 Michelins at our load 97 pounds is where we run. recommended pressure was 90.

"Buy a TPMS, and set the pressure by it." About all I can say is this is a first. Actually I have a lot to say as I do not see this as a better way. Yes, running more pressure than needed will not hurt the tire and will decrease the pressure/heat increase which is normal. If you look at the sidewall of your tire it will say XXX max press COLD. Pretty sure Goodyear knows the pressure is going to increase when the tire warms up, even going above the max pressure... so what? It's no longer a cold pressure.I do run 5 psi more than the inflation/weight table because I'll still drive when there is a strong cross wind. It can shift enough weight to the down wind side so I see more than the normal 10% increase in tire pressure.

Crank it up to the maximum on the sidewall and go down the road happy. If the tire should lose a few pounds during a long trip don't sweat it. I start at 80 psi and will let it go down to 75 psi before adding air.

tire pressure | Good Sam Community

crasster
Explorer II
Mar 02, 2015
On my passenger car I always make my tire pressures about 5-7psi more than the label. It gets way better MPG and have driven this way for 3 decades with millions of miles.... On an RV I go right off the mfg suggestion to the max or tire max. One of the other. RV's are simply too heavy and large to mess around with. (Especially on my class A bounder. My little Toyota class c I've played with some on psi with no problems)
janstey58
Explorer
Mar 02, 2015
My MH has a sticker near the drivers seat that provides recommended PSI for front and rear tires, that I what I go by.
uncle_t
Explorer
Mar 03, 2015
a tire will lose pressure going down the road if it has a hole in it:B
bigbaddad
Explorer
Mar 06, 2015
Know your weight. If you want to plan for a bit more weight that's fine but don't exceed the gross rating (it's not just an arbitrary number) Use the tables/charts to know the pressure for your brand/size. The pressure is when tires are cold, the increase from running down the road should not be a concern. The pressure build up from running is caused by heat increase from tire flex and don't try to outguess the engineers on that. One questionable statement I often see is where people think that going up a load range in tires will allow them to use lower pressures and get a softer ride...just doing that based on tables can be dangerous. There are tires that need minimum pressures to safely stay on the rims and running pressures at the very bottom of the tables can cause flexing that raises some pretty high heat which is asking for big trouble.

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