Tire Pressure

[steveL332]

Normally I don't travel with the fresh water tank full. However I will on my next trip. With the added weight I was wondering about tire pressure. The sticker on the driver's door states 75 PSI in the front, and 80 PSI in the rear tires. I have a class C motorhome. These PSI's are where I keep the tires inflated. Should I make any pressure changes due to the increased weight?

[Elite Washington]

I haven’t with a full water tank, those are the pressures that I keep ours at. Maybe better answers but have done that since we bought ours new 4 years ago.

[EA37TS]

Get the coach weighed and set the pressure too that which the tire manufacturer recommends in their weight to PSI tables.

[Travelin' Texans]

To ease the worry/questioning about it I'd air to max recommended tire pressure which may make the ride a bit firm (after all it's a motorhome not a luxury sedan), should make for better tire wear & more stable handling.

[gmc]

Originally Posted by steveL332

Normally I don't travel with the fresh water tank full. However I will on my next trip. With the added weight I was wondering about tire pressure. The sticker on the driver's door states 75 PSI in the front, and 80 PSI in the rear tires. I have a class C motorhome. These PSI's are where I keep the tires inflated. Should I make any pressure changes due to the increased weight?

You are already running at the pressure needed for your rig up to it’s GVWR... it’s maximum allowed weight.
The ride may be harsher than necessary, but is ‘safe’ up to max weight.
Weighing your coach to insure you are under max weight - or to get a ‘better’ (from ride perspective) tire pressure from tire manufacturers tables based on actual weight is a good idea...

I was surprised how close to max I was on one of our 3 month snowbird trips... Carry less stuff for shorter trips.