Tire Pressure for 2015 Winnebago Vista 27N

[vermontcc]

OK Karens. Thank you so much for your learned feedback about setting my cold pressure 5 % below mfg guidelines like its the end of my RV tires. Lets move on. Its my RV.

 

[jadatis]

OK Karens. Thank you so much for your learned feedback about setting my cold pressure 5 % below mfg guidelines like its the end of my RV tires. Lets move on. Its my RV.

We dont say its definitely the end of your tires.
Mayby after weighing fully loaded per axle, or better per axle-end , and calculating pressure with absolutely needed reserve, it mayby comes to 76 psi, and then thats cold measured, so when temperature of gascompound in tire is same as ambiënt temperature. Then rising by driving temperature in tire rises, wich highens the pressure to mayby 80/82 psi, is normal and OK.

 

[Morich]

One of the thing I see most often in tire pressure discussions is missing here!
Lots of talk about tires and pressure and it is mentione dthat it changes with temperature. so my thining changed when I got a TPMS to tell me the tire temeprature and pressure.
There is no way, I'm going to change my tire pressure to fit when I start out at 32 degrees in the morning and may be at 75 by lunch! I find a safety range that is an estimate of what works best and then let the TPMS alert me if I'm out of that range.
On a cold sunny day, the direction you drive can change the tire temperature on each and that changes the pressure, so how obsessive do you want to get?

 

[jadatis]

If you are in the camp of Porsche and BMW TPMS, and Rimex mining tires on the other end of vehicle-kinds, you yust let the pressure flow with temperature-change.
They assume determined needed cold pressure for load and speed, to be for cold filled at 20 degrC/ 68 degrF.

So why not use it for RV- vehicles, wich are in between in vehicle-kind.

Then if ambiënt temperature at 100 degrF , you drive in, the determined pressure should be calculated from that index-temperature of 68 degrF to temperature in the tire, so cold = ambiënt temperature, and no overheated tire-material, wich is main goal of tiremakers.
And nature aranges this itself, pressure gets automatically higher bij the temperature reading.

So you can also sit back and trust nature.
If tpms sensor detects a pressure loss of 2 psi between the sendings, it sends direct, and receving unit with display, explains this as sudden pressure-loss, and all the bels ring.

Only thing is that you probably have external tpms-sensors wich give temperature at the end of valve. So lower then temp of gascompound in tire. So you cant calculate it yourselfes, using temperature reading of tpms.

You can though calculate temperature in tire back from cold pressure filled at 68 degrF and actual pressure given by tpms screen.
Then notice the difference between that temperature and reading from tpms.