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Old 04-28-2015, 12:55 PM   #1
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Michelin Tire Size Question

My 2008 Itasca Latitude has Michelin 255 80R 22.5 tires and they need to be replaced. According to a few dealers, Michelin are the only maker of a tire this size. To replace 6 tires is quite a chunk of change so was looking for a lower cost alternative. I can get other brands but the size is 255 70R 22.5. Has anyone done this and does it have any effect on handling or weight rating.

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Old 04-28-2015, 01:44 PM   #2
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Are you aware of the FMCA Michelin Advantage program? I have heard good reports from some members on the savings. I will try and post the link. Michelin


Don & Bev Morgan Weyauwega WI, 05 Itasca Horizon 40KD, 400 HP Cummins, Delorme GPS LT 40, Toad 07 Saturn Vue AWD, Air Force One, TST 510 TPMS, Mayor of Weyauwega 2007 - 2013, Waupaca Co Board Supervisor 2010 - 2014
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Old 04-28-2015, 02:08 PM   #3
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I'm do next year and Yes they are their own size, I've read most all of the tire post on here and I'm going with Toyo M-154, they have several different sizes to replace the Michelin's. Don't know how many miles you travel a year but I usually run about 22,000. My friend had a Michelin come a part (XRV) and No truck place had one available so I don't think they are a common stocking tire, just for reference!
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Old 04-28-2015, 04:58 PM   #4
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Substitute size for 255-80R-22.5?
2000 Holiday Rambler Endeavor 40PBD
Freightliner XC, CAT 3126B
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Old 04-29-2015, 02:40 PM   #5
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Good year shows 265/75R22.5 as the substitute size for that one. See Size Conversions - Goodyear RV

255/70R22.5 is not an optimal choice. Generally when the middle number (aspect ratio) gets smaller, you need to increase the first number (tread width) a bit to keep the same overall rolling circumference. A 255/70 is going to have a smaller diamter and there fore make more revolutions per mile, throwing off the odometer and speedometer and increasing wear slightly.
Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
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Old 04-30-2015, 06:51 AM   #6
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I replaced my Michelin 255-80R-22.5 with Toyo M-154 265-75R-22.5. Very small difference in diameter. Search tire size comparison chart.

I'm happy with the Toyo's.

Charlie Tuit, 2002 Journey, 32T, XL7 toad
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