adding PSI to warm TT tires

[ajlcal]

My TT's owners manual suggest adding 4-6 PSI to the tires after driving about 6 miles (in other words to warm tires). They say it improves gas consumption and reduces overheating tires. It sounds like a good idea and I have the equipment to stop and add pressure. I always check and maintain max cold tire pressure before driving. Should I bother adding this 4-6 PSI after driving for a while? Furthermore, if I did add PSI should I release some pressure when I stop and the tires go cold again?

[bdpreece]

It sounds like BS to me. I would say you are already doing what is the correct procedure. Think about this a little bit. If you are already running the max cold pressure and you run them awhile then ad 4-6 pounds what would be the difference in adding 4-6 pounds cold; plus now you are above max cold pressure. Actually the correct cold pressure should be derived by weighing each tire but max cold is the highest you should go

[lllkrob]

I don't know who wrote your TT owners manual but they sure don't know much about tires. Tire pressures will increase as the tire warms up, usually 3 to 8 psi depending on tire size. If you are at max cold psi your tires will automatically gain pressure as they warm up.

[Ray,IN]

We all know that ST tires must be inflated to sidewall maximum for warranty purposes, so:
I've gotta ask; Which TT manufacturer?
Tire Tech Information - Air Pressure, Temperature Fluctuations
explains, in great detail, how heat affects tires. When to check air pressure and how.

[ajlcal]

Quote:

Originally Posted by Ray,IN We all know that ST tires must be inflated to sidewall maximum for warranty purposes, so: I've gotta ask; Which TT manufacturer? Tire Tech Information - Air Pressure, Temperature Fluctuations explains, in great detail, how heat affects tires. When to check air pressure and how.

Thanks Ray,IN. The link you included was informative.

To answer your question, TRAVEL TRAILERS AND FIFTH WHEELS OWNER'S MANUAL by Gulf Stream Coach Inc., 2009, page 10 under section Tire air pressure.

[diandtom]

I start out with the PSI at 80 and after a few miles they usually up to 88-90 PSI. This is with E rated tires. I am getting these reading from a Pressure Pro

[RustyJC]

Set the tires to the correct pressure when cold and let them be. The pressures will increase as the tires heat up, but that's normal.

Rusty