I have a 2003 Wilderness 27' GL TT with 205/75-15C tires on it. I would like to replace the OEM tires with 225/75-15D tires. I couldn't find any PSI stamps on the outside of the wheel. My question is ... will the factory wheels handle the additional 15 PSI required for the 225/75-15 tires?
It would be easy to just drag the TT to a shop, but it has been sitting so long I doubt it would make it out of the driveway with the existing tires (badly weather checked) and I live 50 miles to the nearest tire shop.
I don't know the answer re: the wheel rating. According to the Maxxis site, the move to the larger "D" rated tire will give you 230 lbs per tire of additional capacity at the same 50 psi you are currently running with the smaller tire. Perhaps with that extra you wouldn't need to use the extra 15 psi available with the heavier tire. If you determined that the wheels were up to the extra psi, then you would have an additional 390 lbs of capacity per tire. One thing to note is that with either cold starting pressure, 50 psi or 65 psi, the hot pressure with identical loads, after 50 miles or so of operation will probably be virtually identical, with the principle difference being the tires temperature. That was my experience when testing truck tires loaded to identical weights at different starting pressures varying from 90 to 120 psi. The hot pressures never varied by over 1 or maybe 2 psi, but the tires starting at lower pressures were much, much hotter. Heat from under inflation is the number 1 enemy of tires.
I just went from 205 75 R15C to 225 75 R15E. There isn't a PSI rating on my wheels.
I suggest you go to a well known shop, like Les Schwab. They won't mount something your wheels can't handle, plus I don't think you can beat their warranty or service. Good luck.
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coolbreeze01 wrote: I just went from 205 75 R15C to 225 75 R15E. There isn't a PSI rating on my wheels.
I suggest you go to a well known shop, like Les Schwab. They won't mount something your wheels can't handle, plus I don't think you can beat their warranty or service. Good luck.
just wondering... do you have alloy wheels... I know some alloy wheels don't have PSI ratings, or better stated they are rated to the PSI rating of the valve stem... but I am not aware of any steel trailer wheels that are rated that way...
coolbreeze01 wrote: I just went from 205 75 R15C to 225 75 R15E. There isn't a PSI rating on my wheels.
I suggest you go to a well known shop, like Les Schwab. They won't mount something your wheels can't handle, plus I don't think you can beat their warranty or service. Good luck.
just wondering... do you have alloy wheels... I know some alloy wheels don't have PSI ratings, or better stated they are rated to the PSI rating of the valve stem... but I am not aware of any steel trailer wheels that are rated that way...
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