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09-06-2014, 09:56 AM
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#1
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Montana Fan
Join Date: Feb 2010
Location: St. Clair Shores
Posts: 389
M.O.C. #10151
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Tire Size Comparison
Well... We had a flat (road hazard puncture) on the OEM Marathon tires. The tire is not repairable. Does any one know if the OEM and new G614s are the same size? I wouldn't want to run different diameters. I do want to eventually upgrade but that would put a real strain on the budget right now. What to do, What to do?
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09-06-2014, 10:13 AM
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#2
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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The marathon is 30.7 inches in diameter as is the G614RST. The marathon is spec'd at 3420 pounds at 80 psi, load range E, while the 614 is 3415 pounds@ 95 psi to 3750 pounds @ 110 psi. Hope this helps you. john
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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09-06-2014, 11:39 AM
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#3
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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Quote:
quote:Originally posted by jcurtis934
The marathon is 30.7 inches in diameter as is the G614RST. The marathon is spec'd at 3420 pounds at 80 psi, load range E, while the 614 is 3415 pounds@ 95 psi to 3750 pounds @ 110 psi. Hope this helps you. john
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Not sure about that statement, I thought the 614's were an inch larger on the outside diameter??
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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09-06-2014, 12:03 PM
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#4
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Montana Fan
Join Date: Jun 2011
Location: stockton
Posts: 405
M.O.C. #11457
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My G614's are about an inch taller than the Marathons.
__________________
 2014 Montana Mountaineer 331 RLT. Winneguard SWM Traveler Satellite Antenna, Progressive 50 amp portable EMS, 6 point Level Up.. 2016 Chevy 3500 Duramax Dually, long bed, B&W Patriot hitch.
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09-06-2014, 12:06 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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That's how it worked with mine also.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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09-06-2014, 12:21 PM
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#6
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Montana Fan
Join Date: Nov 2013
Location: Fayetteville
Posts: 125
M.O.C. #13868
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If they are a little taller it is not an issue with the trailer skirting. At least on the 3850 and the 3910.
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09-06-2014, 12:35 PM
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#7
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Montana Master
Join Date: Jun 2004
Location: Benson
Posts: 3,121
M.O.C. #1658
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According to the Goodyear website they are the same diameter. Go figure
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09-07-2014, 03:49 AM
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#8
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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If folks running the g614's are seeing tires that aren't to the published spec, then it could be that they changed the molds and never updated the website. John
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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09-10-2014, 07:06 AM
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#9
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Montana Fan
Join Date: Mar 2013
Location: miami
Posts: 152
M.O.C. #13290
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if i where you i replace all the marathon tires with g-614 it'called peace of mind
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