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Open Roads Forum  >  Toy Haulers

 > Rim psi rating.. !!!

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Tomczaksdiesel

Roseville

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Posted: 03/27/12 10:10pm Link  |  Print  |  Notify Moderator

I have a 2006 rampage fithwheel toyhauler

My wheels are rated for 3040pounds, i got E load tires, rated for 3400.. Is it okay if i put 70 pounds in the tires? Im no where near 3,000 a tire so the weight is fine.. I just want to see if the wheel will be fine at 70ish psi or if i should go back down to 65psi like the d loads. Are the wheels capable of 80psi? Is it just how much WEIGHT you can have on the wheels and psi wont matter? Rims are spun aluminium

Thanks!!


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Tomczaksdiesel

Roseville

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Posted: 03/27/12 10:13pm Link  |  Print  |  Notify Moderator

Rims did not say psi rating as far as i could tell... Only weight rating.
Tires themselves will not be over 3k anyways..

Will i be safe running 70psi? D load tires that i took off were rated for 65.

Will that extra 15 pounds hurt anything if i do go to 80psi?

Will 65 psi wear my E load tires in a negative way? Or will i be fine.?

What psi would you put the tires at?

Thanks!

skipnchar

Topeka or somewhere else

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Posted: 03/28/12 06:23am Link  |  Print  |  Notify Moderator

It would be insane for a manufacturer to use rims rated for only 65 PSI on a trailer with D range tires. they would routinely be running with over 70 PSI in them once they're warmed up.


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pcassidy111

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Posted: 03/28/12 05:23am Link  |  Print  |  Notify Moderator

If your trailer came with D range tires then you probably have rims rated for 65 psi cold. I would not exceed that pressure. It is ok to run 65 psi in your E range tires. You will just have a 10 ply tire with an 8 ply tire load limit. If you want the full benefit of the E range tires you will have to upgrade your rims to rims rated for 80 psi and steel valve stems.


Pete

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Posted: 03/28/12 09:18am Link  |  Print  |  Notify Moderator

My TT came with forged aluminum wheels and load range D tires. (Goodyear Maraflops) which I changed to Maxxis 2008 Es and 80psi with no adverse effects in past six years. JMHO


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Posted: 03/28/12 06:13am Link  |  Print  |  Notify Moderator

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pcassidy111

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Posted: 03/28/12 11:25am Link  |  Print  |  Notify Moderator

skipnchar wrote:

It would be insane for a manufacturer to use rims rated for only 65 PSI on a trailer with D range tires. they would routinely be running with over 70 PSI in them once they're warmed up.


That is the rating cold, thermal expansion is taken into account in the design. At 80 psi cold I see 95-100 psi hot on occasion, even higher when the trailer is stationary on a summer day and the sun shining on the tires. . I would not want a rim rated for 65 psi cold to see those kind of pressures. Just my opinion.

Star Gazer

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Posted: 03/28/12 02:39pm Link  |  Print  |  Notify Moderator

I am guessing that when the trailer mfg buys the rim and tire combo the psi is stamped on the rim for that particular tire.

I had 50 psi tires and rim stamped that on my trailer new, upgraded to D and now run 65 psi in the same rim. I doubt steel rims have rating, at least in our ranges.


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Dirtclods

Newport Beach

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Posted: 03/28/12 11:05am Link  |  Print  |  Notify Moderator

I too have E-load tires that say fill cold 80 PSI and that's what I do. I've never had blow out or a flat tire so far! Some here lower air pressure for a better ride and those F'n pot holes!! Or let a little out for every 10 degrees Fahrenheit, up or down, tire pressure will change 1 PSI. And Altitude Changes The result of lower pressure at altitude means that less air will be needed to properly inflate your tires than at sea level, and tires inflated properly at a lower altitude may now be overfilled.

tmprkswyo

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Posted: 03/28/12 02:56pm Link  |  Print  |  Notify Moderator

Personally I would use them and not think twice about it.

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