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09-05-2012, 05:58 AM
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#1
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Montana Master
Join Date: Nov 2009
Location: Wampum
Posts: 571
M.O.C. #9928
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Tire confusion
There is so much discussion about tire issues, especially with the Marathon tire, that my head is beginning to spin. I have Marathons on my 2010 3150RL and want to replace them. BUT, except for the G614s, which are pretty pricy, I can't find any tire in the exact size with a load rating higher than about 3042# rating. I have found a nice tire with a 3415# rating but it requires a 7" wide wheel. I believe my wheels are 6". The overall diameter is the same. My question is: Can this tire be safely mounted on a 6" wide wheel, or am I inviting major trouble?
__________________
"What happens at camp stays at camp"
2018 3121RL
2016 Ford F350 SB SRW
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09-05-2012, 06:14 AM
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#2
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Montana Master
Join Date: Aug 2007
Location: Waterford
Posts: 3,693
M.O.C. #7500
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I replaced ours with Maxxis tires from Discount Tire. They are a trailer tire so they have the higher weight rating. All four, mounted, balanced and out the door were just under $1k. They also have a road hazard warranty - which I hope I never have to use!
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09-05-2012, 07:48 AM
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#3
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Montana Master
Join Date: Nov 2007
Location: Atlanta
Posts: 908
M.O.C. #7915
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Quote:
quote:Originally posted by Slufoot733
There is so much discussion about tire issues, especially with the Marathon tire, that my head is beginning to spin. I have Marathons on my 2010 3150RL and want to replace them. BUT, except for the G614s, which are pretty pricy, I can't find any tire in the exact size with a load rating higher than about 3042# rating. I have found a nice tire with a 3415# rating but it requires a 7" wide wheel. I believe my wheels are 6". The overall diameter is the same. My question is: Can this tire be safely mounted on a 6" wide wheel, or am I inviting major trouble?
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What a number of us have done is dumped the ST tires and gone to either USA or Japanese made LTs, size 235/85/16. They will fit and, that 3042# capacity will carry the load. With your GW of 14k and 20% on the pin, that leaves 2800# for each of the four RV tires.
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09-05-2012, 07:55 AM
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#4
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Montana Master
Join Date: Jun 2010
Location: Colorado Springs
Posts: 3,335
M.O.C. #10496
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Please look at my signature to see what I replaced our Marabombs with. Good solid tires that support the weight at a lower price point. The main thing is to REPLACE the Marabombs ASAP!
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2010 3150RL
LevelUp, Dual 6 volt batteries, Progressive Industries EMS HW50C, Honda EU2000i Generator, Bridgestone Duravis R250 tires, Torklift Glowstep Revolution Stairs, LED Tail lights
2015 RAM 3500 Laramie SRW LB CC Cummins 6.7L Aisin Trans B&W RVK3600
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09-05-2012, 08:16 AM
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#5
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,659
M.O.C. #9969
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To answer your original question: I wouldn't put a tire designed for a 7" wheel on a 6" rim and espically on a trailer with all the side wall flex during turns and backing into that beautiful but extremely tight spot. I would be worried about rolling the tire right off the rim.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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09-05-2012, 11:20 AM
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#6
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Montana Master
Join Date: Nov 2009
Location: Wampum
Posts: 571
M.O.C. #9928
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Thanks all for your input. I shall continue the search.
__________________
"What happens at camp stays at camp"
2018 3121RL
2016 Ford F350 SB SRW
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09-05-2012, 11:27 AM
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#7
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Montana Master
Join Date: Jan 2012
Location: Copperas Cove
Posts: 1,426
M.O.C. #12096
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I would not put a wider tire on the rims you have. With the weight they carry it may not handle it. I know in the old days yeah we used to put 60 series tires on factory rims of our "hotrods" lol lol, but they were not carring the kind of weight a 5er has. But you can put an LT tire on your rig and be under all the weight limits even if you totally load up your trailer. LT tires are also more forgiving then ST tires...my opinion only but sure seems that way.
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09-05-2012, 01:09 PM
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#8
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Put the right size tire on, but don't restrict yourself to ST tires, although I have G614's and others Maxxis and both of those are great, many use LT tires and have excellent results. Widen your search, you'll find something that works for you and keeps you safe.
__________________
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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09-06-2012, 02:26 AM
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#9
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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We have been running Firestone TransForce LT E Load tires on our Montanas for years, with no issues. We spent a total of 103 days in our house last year. The ones I put on our current rig were $165 each, and a bit larger than the Marathons but sufficient clearance at the frame.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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