Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 

Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > GENERAL DISCUSSIONS > TIRES, Montana Tires
Click Here to Login

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-15-2014, 11:12 AM   #1
tmac1
New Member
 
Join Date: Sep 2014
Location: Wakefield
Posts: 5
M.O.C. #14688
Upgrading to larger diameter tires

I'm sure this question has come up before, but after reading lots of posts I want to upgrade the 235/80 R16 E tires to quality G load rated tires but they all seem to be 235/85 R16 G . Keystone won't provide any advice as their unit is designed for 235/80 tires.
Has anyone switched to a 235/85 G on a Montana 3150 RL? New to the forum and just getting ready for our 2nd year as snowbirds and RV'rs.
 
tmac1 is offline   Reply With Quote
Old 09-15-2014, 11:18 AM   #2
tmac1
New Member
 
Join Date: Sep 2014
Location: Wakefield
Posts: 5
M.O.C. #14688
Sorry about the thumbs down, new to this
tmac1 is offline   Reply With Quote
Old 09-15-2014, 12:18 PM   #3
DQDick
Site Team
 
DQDick's Avatar
 
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
I believe our 614's are 235/85 and we've run them for several years with no problems.
__________________
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.
DQDick is offline   Reply With Quote
Old 09-15-2014, 01:16 PM   #4
1retired06
Montana Master
 
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
We run 235/85R16s , no issues.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
1retired06 is offline   Reply With Quote
Old 09-15-2014, 03:37 PM   #5
rohrmann
Montana Master
 
rohrmann's Avatar
 
Join Date: Oct 2012
Location: Box Elder
Posts: 4,676
M.O.C. #12947
On our rig, the Goodyear G614 235/85 R16 14 ply tire was an option, using the same wheels, which are rated 110 psi and 3750 lbs load rating. Even though it was an option, and being unaware of the Marabomb issues, we took possession of our Montana. After 5 tire failures, none blowouts, we finally upgraded to the G614's almost a year ago, with absolutely no problems. Keystone will not comment about those tires, as that would be an admission that they knew the 10 ply tires were a problem.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
rohrmann is offline   Reply With Quote
Old 09-16-2014, 12:59 AM   #6
tmac1
New Member
 
Join Date: Sep 2014
Location: Wakefield
Posts: 5
M.O.C. #14688
Thanks for the information, my main concern is clearance in the wheel wells and between the axles due to the increased tire diameter and width. If I know that any of you upgraded from Marathon 235/80 R16 E to the G614 235/85 R16 on a 3150 RL I will feel confident ordering these expensive tires.
tmac1 is offline   Reply With Quote
Old 09-16-2014, 03:56 AM   #7
DQDick
Site Team
 
DQDick's Avatar
 
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
Having been to the factory and seen how they're built, from the fame up, three different times I can't believe the clearances are different on any of the models.
__________________
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.
DQDick is offline   Reply With Quote
Old 09-16-2014, 04:53 AM   #8
tmac1
New Member
 
Join Date: Sep 2014
Location: Wakefield
Posts: 5
M.O.C. #14688
That's good to know, did your 3665RE have 235/80's on it originally.
tmac1 is offline   Reply With Quote
Old 09-16-2014, 04:04 PM   #9
rohrmann
Montana Master
 
rohrmann's Avatar
 
Join Date: Oct 2012
Location: Box Elder
Posts: 4,676
M.O.C. #12947
If the G614's are only 1 inch larger in diameter, although the Goodyear site says they are the same as the Marathons, that means they will only be 1 inch closer between the tires, and only 1/2 inch higher into the wheel opening. Pretty sure there is at least that much extra room for the tires on these rigs. They are also a bit wider than the Marathons, but so far on our rig, the wheel opening trim is still there.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
rohrmann is offline   Reply With Quote
Old 09-17-2014, 04:09 AM   #10
tmac1
New Member
 
Join Date: Sep 2014
Location: Wakefield
Posts: 5
M.O.C. #14688
That's good enough for me Bob, I am taking the plunge, putting in my order today. Hopefully this will end my tire problems.
Thanks everyone!!
tmac1 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Buying larger tires mdgear TIRES, Montana Tires 16 08-12-2014 06:01 AM
Upgrading to 17.5 Inch Tires/Wheels Bigsky3625RE Additions & Improvements 25 04-21-2013 04:26 PM
Diameter of axles on Montana? Ozz Tow Vehicles & Towing 7 11-23-2010 03:45 AM
PSD Owners with larger than stock tires timbuktu78 Tow Vehicles & Towing 5 11-11-2009 03:31 PM
Diameter of ducting RnR General Discussions about our Montanas 0 05-31-2003 07:36 AM

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 09:12 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.