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Old 12-24-2015, 12:30 PM   #1
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2000 Discovery 37V Acceptable tire size options

1) Does anybody have experience with trying a larger Tire size on a 2000 FW Discovery 37V Freightliner Chasis instead of the Mich 235 x 80 22.5? 2) are Mich XRV 235x80 22.5 tires the OE for a Fleetwood Discovery 37V or what size / brand tire was OEM. 3) Would a Toyo M154 265 x 75 22.5 tire be a suitable alternative that would fit my RV? (I already confirmed it meets or exceeds the load ratings of Michelin XRV tires.
I prefer to have a slightly larger diameter tire because my exaust tip currently drags sometimes.
The Toyo 265 x 75 is .85 in larger dia and 1.18 in wider.
I checked the width between the current tires and the Michelins appear to have at least 2 inches or more of gap so, is taking away 1.2 of the current gap between the dual rear tires acceptable? I'm no expert and need some advice. I think I might also need to trim the top of the rear wheel well fiberglass lip but that is TBD. 4) Is there a way to check will the larger tire work on the front without scrubbing or reducing my turning radius?
I may buy from a discount warehouse that doesn't mount them so, I need to get this right before I buy them unless I can find a dealer who will "try for fit" the 265 x 75 M154 Toyo tires. Would love to know if anybody is already using a 265 x 75 22.5 on a 2000 Discovery or something close to that year that would be comparable to mine. Please excuse my long post, I'm new at this.
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Old 12-25-2015, 08:07 AM   #2
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Not sure I would fool with a tire size change for the occasional exhaust tip dragging. Will the small tire difference really eliminate the dragging? Maybe a exhaust tip modification?
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2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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Old 12-26-2015, 09:48 AM   #3
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Thanks for your suggestion but I'm looking to make a tire size change anyway bc it seems the 235x80r22.5 is only made by Michelin. I've read about many side wall blowouts with the Michelin tires. Almost all the write up said Michelin doesn't stand behind the tire with a warranty. Good reports on Toyo at a lower price. Since I'm changing the tire size, I was wanting to go both wider and taller to add more safety margin on the load rating and a half inch higher ride height MAY help avoid the exhaust trip drag or at least not make it worse. To totally fix the tip drag I will probably add a couple of swivel dolly wheels on the back to also help to avoid carrying rack drag.
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Old 12-26-2015, 10:35 AM   #4
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I think if you go up one size to 245 that will get you out of Michelins clutches.
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