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06-26-2010, 07:13 PM
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#1
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Senior Member
Join Date: Jun 2010
Posts: 222
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adding PSI to warm TT tires
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?
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06-26-2010, 09:45 PM
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#2
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Senior Member
Monaco Owners Club
Join Date: Mar 2000
Location: Yuma Arizona USA
Posts: 2,996
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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
__________________
Brian, Loretta & Lucy (Golden Retriever)
2008 HR Endeavor 40 PDQ , ISL 400
2010 Dodge Ram 1500 Toad
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06-26-2010, 10:16 PM
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#3
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Senior Member
Join Date: Nov 2008
Posts: 3,648
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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.
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06-26-2010, 11:01 PM
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#4
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,954
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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.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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06-27-2010, 04:50 AM
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#5
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Senior Member
Join Date: Jun 2010
Posts: 222
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Quote:
Originally Posted by Ray,IN
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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.
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06-27-2010, 09:56 AM
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#6
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Senior Member
Appalachian Campers Coastal Campers
Join Date: Mar 2003
Location: New Bern,NC
Posts: 2,033
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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
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06-29-2010, 02:35 PM
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#7
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Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
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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
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