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Old 01-15-2015, 01:56 PM   #1
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Can you run 245/75R16 on a Greyhawk 31SS?

I'm planning on replacing all the tires on my Greyhawk before Spring. I've been looking online at many tire brands, sizes and prices. I know the original tires are 225/75R16. I've found some Goodyear Wrangler HT 245/75r16/ 10 ply for a good price - actually about $20 less per tire than the 225 size. Is the 245 too big for a Greyhawk?
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Old 01-15-2015, 02:59 PM   #2
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I personally would not run any tire size on my RV than that which is recommended.
I could not find the dual wheel load rating info, which is needed to check against your rear tire load requirements. I Would also question the taller tires clearance between tires on the rear set. They must not touch.

I have never run Good Year tires. But these are E rated for load and R rated for speed. If the load matches and the tires mount properly, it may work, but I would find a commercial truck tire company to confirm its a good idea.
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Old 01-15-2015, 03:36 PM   #3
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As TX said you definitely don't want the sidewalls rubbing which could happen with the larger width.
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Old 01-15-2015, 04:57 PM   #4
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Ford E-350 Van's come with 245/75R16's. Ford E-450's come with 225/75R16's. Will the 245 work ? Sure, but if Ford thought it better to Spec the 225 on the dually chassis shouldn't you follow suit ? You're call obviously.

My input though would also be to look at other tires. I owned a bus company for 15 years. We had buses of all sizes but our smallest were Ford E-350 15 passenger Vans. Those units all came stock from Ford with the Wrangler HT's and we absolutely hated the tire. Terrible in the rain and snow (especially after 20% wear or so). Mushy ride (soft sidewalls) and they also wore out very quickly. The Michelin's (LTX M/S's) we always replaced them with could easily give us 60,000+ miles where the Wranglers were toast in 25-30,000.

I'm not positive but I'm pretty sure that all of the E-450 Mini-buses (24 ish passenger) that we purchased over the years (same chassis as the Greyhawk) came from Ford with Michelin's.
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Old 01-16-2015, 06:14 AM   #5
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Increasing the tire size is the same thing as taking gear out of the truck. You will notice a reduction in pulling power, and also probably a reduction in gas mileage since the truck is having to work harder.

I already fought these battles on my dually. It performs best with the tire sizes prescribed by the manufacturer.

BTW, the best deals I've found on tires are at tirebuyer.com.
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