what air pressure are you guys running

The pressure listed on the sidewall of the tire is NOT the MFG suggestion. That is simply the max pressure for the max load. Weighting the coach and reducing the pressure to the MFG recommended pressure is the right thing to do. I have sidewall pressures listed at 120 PSI. The steer tires have 110, the drive tires 100 and the tag axle tires carry 80.

We run our bounder at 5 psi less to reduce bumpies... and the Toyota at Tire MFG pressure. Each coach will be different. Don't swing it too far off the MFG suggestion though for safety.

Effy wrote:
No one can tell you what PSI to run on your coach.

The only way to accurately set PSI for your coach is to load it like you are travelling (water, fuel, people, clothes, food, etc) and weigh it - 4 corners if you can, if not then at least each axle.

Once you know the weight, set the cold PSI based on the tire manufacturers chart.

Anything else is guessing.

The max on the sidewall is exactly that, the max PSI for that tire at max load. This is not what you want. It's really more of a warning.

X3 Have not done 4 corners yet but did do it per axle plus 5#

I just don't understand why this question is asked SO OFTEN.

SOMEWHERE on the chassis there should be a sticker or plate that gives the standard recommended pressure for that specific model.

THAT is a good place to start......and maybe even a good place to stay if you don't overload it. Add 5 PSI if it makes you feel better.

And then if you are really worried about it, get it weighed later when it's convenient.

Thanks for all the replies.

I ran max sidewall (125 PSI) until I had it weighed. Rode like a Flintstone mobile, but it was the only way to be sure I wasn't under-inflated. After weighing (22,800 on a 24,000 lb chassis), I was able to drop down to 95. The chart said 90, but I added 5 for a little cushion. Big difference in the ride.

We have the Ford chassis with a Tiffin 36LA. We had the suspension upgraded and as part of that we had it weighed. After weighing the RV we are running with the psi at 80 to 85 lbs.

Effy wrote:
No one can tell you what PSI to run on your coach.

The only way to accurately set PSI for your coach is to load it like you are travelling (water, fuel, people, clothes, food, etc) and weigh it - 4 corners if you can, if not then at least each axle.

Once you know the weight, set the cold PSI based on the tire manufacturers chart.

Anything else is guessing.

The max on the sidewall is exactly that, the max PSI for that tire at max load. This is not what you want. It's really more of a warning.

X2

No one can tell you what PSI to run on your coach.

The only way to accurately set PSI for your coach is to load it like you are travelling (water, fuel, people, clothes, food, etc) and weigh it - 4 corners if you can, if not then at least each axle.

Once you know the weight, set the cold PSI based on the tire manufacturers chart.

Anything else is guessing.

The max on the sidewall is exactly that, the max PSI for that tire at max load. This is not what you want. It's really more of a warning.