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03-25-2021, 11:08 AM
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#1
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Montana Fan
Join Date: May 2016
Location: celina
Posts: 122
M.O.C. #18604
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Goodyear to sailun size question
We have a 2017 3721 rl. Came with Goodyear G614 RST lt 235/85r16. What size do I need in Sailun?
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03-25-2021, 11:22 AM
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#2
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Montana Master
Join Date: May 2020
Location: UPLAND
Posts: 1,283
M.O.C. #26190
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I think this is it. I just had to buy one on line from Amazon. Mine though was for a 15" rim.
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2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan (daughter-in-law Stephanie). & our Great Pyrenees Layla
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03-25-2021, 07:39 PM
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#3
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Montana Master
Join Date: Feb 2008
Location: woodstock
Posts: 565
M.O.C. #8174
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Yep ST235/85R16
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Ed
Montana Master
Woodstock Ga
2020 3931 FB Legacy
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03-25-2021, 09:05 PM
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#4
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,183
M.O.C. #1920
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Just curious if your tires are already worn out? The G614 is a great tire. We have had both and both are great tires on a Montana.
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Ron and Terrie Ames plus Meg - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar+ Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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03-26-2021, 07:16 AM
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#5
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Montana Master
Join Date: Aug 2015
Location: SWFL
Posts: 965
M.O.C. #17801
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Same size.
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2016 Montana 3711FL
2005 Ford F350, 6.0 diesel, short bed
Demco Hitchiker Auto Slide hitch
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03-26-2021, 04:15 PM
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#6
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Montana Fan
Join Date: May 2016
Location: celina
Posts: 122
M.O.C. #18604
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Thanks for all the responses. I have ordered that same size in the sailun. I finally found a truck and frame shop in this area that works on 5th wheels to check the alignment and can bend the axels if needed. I had really bad tread wear on the inside of at least one tire. Only got 15k miles. So I want to get the problem corrected. Frame shop wanted me to put the new tires on before I took it to them.
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03-27-2021, 06:50 AM
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#7
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Montana Fan
Join Date: Apr 2012
Location: Alexandria
Posts: 352
M.O.C. #12394
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Quote:
Originally Posted by gary s swenson
Thanks for all the responses. I have ordered that same size in the sailun. I finally found a truck and frame shop in this area that works on 5th wheels to check the alignment and can bend the axels if needed. I had really bad tread wear on the inside of at least one tire. Only got 15k miles. So I want to get the problem corrected. Frame shop wanted me to put the new tires on before I took it to them.
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Remember to keep the old tire and note the direction of travel to help them diagnose the problem. Hope you get it figured out cheaply!
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2013 F350 SRW King Ranch
2011 3400RL
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03-27-2021, 11:06 AM
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#8
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Montana Master
Join Date: May 2020
Location: UPLAND
Posts: 1,283
M.O.C. #26190
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Funny thing, as the Fed Ex driver was delivering my one Sailun, we looked at his truck and sure enough running Sailuns.
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2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan (daughter-in-law Stephanie). & our Great Pyrenees Layla
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04-04-2021, 01:57 PM
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#9
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Montana Master
Join Date: Feb 2008
Location: Winthrop Harbor
Posts: 1,859
M.O.C. #8160
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Goodyear vs Sailun
We have had our G614s for about 4 yrs. We have had no problems and though we don’t put many miles on them we are thinking of replacing with Sailuns. There is no evidence of dry rot.
Are we premature in our wanting to change them now? We are planning one trip to Colorado in June and Nebraska in July plus some locals.
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04-04-2021, 02:48 PM
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#10
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Montana Fan
Join Date: Jul 2016
Location: Georgetown
Posts: 310
M.O.C. #18751
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I believe the recommended Max life is 5 years.
We keep our rigs in good condition but after a 3 blowouts and some significant damage (expensive as h***) on our Mobile Suites, we do not run tires over 4 years old on the manufacturer’s date stamp.
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04-04-2021, 02:53 PM
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#11
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 4,083
M.O.C. #20477
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I replace at 3-4 years. The Sailuns are dirt cheap - you could afford to replace them every year.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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04-04-2021, 03:15 PM
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#12
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Established Member
Join Date: Jul 2020
Location: Mississauga
Posts: 40
M.O.C. #26577
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Quote:
Originally Posted by gary s swenson
We have a 2017 3721 rl. Came with Goodyear G614 RST lt 235/85r16. What size do I need in Sailun?
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Hey Gary,
I have a 2020 3120RL and it came with Sailun ST235/80R16.
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2020 3120RL
2017 Chevy Duramax Long box dually diesel.
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04-04-2021, 04:57 PM
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#13
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Seasoned Camper
Join Date: Mar 2021
Location: Meridian
Posts: 51
M.O.C. #28444
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Sailun
Load Range G is important. The spice you have listed is availability.
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04-04-2021, 05:01 PM
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#14
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,690
M.O.C. #4831
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The G614 warranty is limited to 4 years (ask me hw I know). I would replace them now with Sailuns.
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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04-04-2021, 05:09 PM
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#15
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Montana Fan
Join Date: Dec 2020
Location: Glendale
Posts: 202
M.O.C. #27658
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Mine came with Sailun S637 G rated tires so I was extremely pleased!! I have not spoken to one person that has anything but good things to say about them. I'll let you know in about 20 thousand miles how I really feel about them!!!!
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Larry & Marilyn Gubbels
2019 F-350 Diesel 4X4, Short Bed, BW 18K slider,
closely followed by a 2020 Montana 3121RL
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04-11-2021, 12:50 PM
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#16
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Montana Master
Join Date: Jan 2015
Location: Taylors
Posts: 562
M.O.C. #15948
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Quote:
Originally Posted by gary s swenson
We have a 2017 3721 rl. Came with Goodyear G614 RST lt 235/85r16. What size do I need in Sailun?
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In the tire world you will be "plus sizing" your tires when you go from the GY G614 to the Sailun. Even though the GY has a RST rating and only used on trailer axles it's still a LT and it's load inflation chart is much different from the ST tire. The ST will only need 95 PSI to provide a load capacity equal to the G614's maximum load at 110 PSI.
There are procedures to follow when "plus sizing" your tires. Most important is the documentation of a new recommended cold inflation pressure provided by an informed tire installer.
NOTE: official tire designated sizes include the prefix.
LT235/85R16 is a full designated size for that LT designated size
ST235/85R16 is a full designated size for that ST designated size
Because your vehicle certification label has a ST235/80R16 as OE, your minimum load capacity for any designated size replacement is 3420#.
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04-16-2021, 11:12 AM
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#17
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Montana Master
Join Date: Dec 2010
Location: Anytown
Posts: 621
M.O.C. #10966
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Just had a new set of the Sailuns size 235/85 16 installed on Monty!
Great deal from Simple Tire, installed at America's Tire.
Couple of issues with America's Tire though...I had to ask them twice to wire brush the mating surfaces and wheel studs. This should be standard practice IMO. No big deal, just some minor surface rust and road crud.
The tech doing the install wasn't clear on the torque requirements for this trailer; when I asked him what he planned, he kinda "guessed" about 100 lbs.!
Uh, no not quite...
More importantly...I was informed that they do NOT have the capability to air up the tires to 100 psi as I requested! Their "trick" air pressure equipment only goes to 90 psi!
I assume they have some rationale for this limitation, but it seems like a management fail to me. Not like these are some unusual tires or something...
On a side note, these Sailuns are extremely stout (and heavy) tires. The GY614s served me well, but at almost 5 1/2 years old they were about due to be replaced and I couldn't pass up the great price on the Sailuns.
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2011 Montana 3580RL, Reese 20k GooseBox w/offset B&W ball, Sailuns, RoadMaster shocks, Splendide stacked washer/dryer, Progressive HW50C, some other stuff...
2015 Ram 3500 DRW Laramie Megacab, Aisin w/3.73s, 255/80 17 Toyos A/T III, rear auto level, 40 gal. fuel/tool combo box, B&W Turnover ball,
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04-16-2021, 12:57 PM
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#18
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Seasoned Camper
Join Date: May 2019
Location: Coatesville
Posts: 55
M.O.C. #24081
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S637 Sailum
I am replacing my ST235/80 R16 Rainer Tires with
S637 Sailum ST235/80R 16 14ply, G-rated does that sound ok?????
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04-16-2021, 01:32 PM
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#19
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 4,083
M.O.C. #20477
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Quote:
Originally Posted by kjohn6363
I am replacing my ST235/80 R16 Rainer Tires with
S637 Sailum ST235/80R 16 14ply, G-rated does that sound ok?????
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Ken,
That will work.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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04-16-2021, 02:25 PM
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#20
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Montana Master
Join Date: Dec 2010
Location: Anytown
Posts: 621
M.O.C. #10966
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Quote:
Originally Posted by kjohn6363
I am replacing my ST235/80 R16 Rainer Tires with
S637 Sailum ST235/80R 16 14ply, G-rated does that sound ok?????
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Sounds like a great idea...they were on sale at SimpleTire a few days ago for $144 each!
__________________
2011 Montana 3580RL, Reese 20k GooseBox w/offset B&W ball, Sailuns, RoadMaster shocks, Splendide stacked washer/dryer, Progressive HW50C, some other stuff...
2015 Ram 3500 DRW Laramie Megacab, Aisin w/3.73s, 255/80 17 Toyos A/T III, rear auto level, 40 gal. fuel/tool combo box, B&W Turnover ball,
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