Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > 5th Wheel Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 02-07-2015, 11:02 AM   #29
Senior Member
 
FastEagle's Avatar
 
Join Date: Sep 2009
Posts: 819
Quote:
Originally Posted by Krieghoff32 View Post
Hello fellow RV'S... I was looking for some advice on a recent trip I had a tire blowout on my fifth wheel on the way to my vacation spot and on the way back can be frustrating I have a Montana 324RLQ and had Goodyear marathon tires on it. I had 75 pounds of pressure in the traveling between 65 and 70 mph. Very frustrating. Can someone recommend the best brand of tire for reliability and any advice to keep this from happening to a minimum.
Thanks
I see two things that probably contributed to your tire failures. First is the air pressure. At 75 psi those tires have a load capacity of about 3200#.

Second is speed. What a tire manufacturer is telling you with his speed restriction is the tires can carry their full load capacity - in this case 3420# - up to and including their speed restriction. After that they are going to produce above normal internal heat which in time will shorting their life expectancy. So, in your case 3200# was the maximum load capacity at 65 MPH. Under your conditions you were very lucky to get two or more years use from them before they disintegrated.

For your driving habits you should consider moving up to a tire with a 75 MPH speed rating and more load capacity for longer tire life.


FastEagle
__________________

FastEagle is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 02-07-2015, 11:31 AM   #30
Member
 
rugersdad's Avatar
 
Join Date: Dec 2011
Posts: 76
Get a set of goodyear G 114s on 17.5 wheels and no more worries about a tire failure. I had marathons and had problems with them as well as cracked rims.
__________________

__________________
rugersdad is offline   Reply With Quote
Old 02-07-2015, 01:49 PM   #31
Senior Member
 
Join Date: Dec 2013
Posts: 1,275
There were problems with Marathons from a few years ago. Those problems have been eliminated. Do you think Airstream and other makers would spec them as standard equipment if they were ticking time bombs. Of course not.
Your best bet would be to buy Michelin XPS Ribs and you will not have problems. It is an all position tire and is probably one of the most if not the most durable tires available. They are expensive but most of us would gladly spend the extra to avoid the hassles and damage form flat tires not to mention the added costs that are associated also.
__________________
09 harley is offline   Reply With Quote
Old 02-08-2015, 01:47 PM   #32
Member
 
Join Date: Mar 2012
Location: Cypress Texas
Posts: 60
Quote:
Originally Posted by FastEagle View Post
DOT regulations do not allow RV trailer manufacturers to install tires with less load capacity than the vehicleís axle ratings. Goodyear 16Ē Marathons even in LRE are only rated for 3420# at 80 psi. Check your trailerís certification label. Iíll bet it lists your axles as having 6750# GAWR ea.

In any event, the Marathons are not stout enough for your trailerís potential maximum load (GAW). Your options would be to use tires with more load capacity. ST options would be the ST235/85R16E rated at 3640# at 80 psi or the ST235/85R16F rated at 3960# at 95 psi. LT options offer steel/polyester cased LT235/85R16G tires from the USA or numerous off shore manufacturers that are rated at 3750# at 110 psi. Most of the polyester cased tires in that size will be hybrid ST tires that have higher speed ratings (75 MPH).

Whenever tires are plus sized, wheelwell clearances, axle spacing, rim dimensions and rim load capacities must be checked to insure all the fitments are safe.

FastEagle

FastEagle,
Thank you so much for the info and I think you're absolutely right about the axles having 6750# GAWR ea. we haven't had a chance to check yet. We added a generator and washer and dryer to the trailer plus it has auto level and all of this ads weight. Now, thanks to your advice we are trying to decide whether to get the Goodyear LTG614 or go with a 17.5 tire. Advice on that decision would be greatly appreciated.
Joatay
__________________
On the go is offline   Reply With Quote
Old 02-08-2015, 01:57 PM   #33
Senior Member
 
FastEagle's Avatar
 
Join Date: Sep 2009
Posts: 819
Quote:
Originally Posted by 09 harley View Post
There were problems with Marathons from a few years ago. Those problems have been eliminated. Do you think Airstream and other makers would spec them as standard equipment if they were ticking time bombs. Of course not.
Your best bet would be to buy Michelin XPS Ribs and you will not have problems. It is an all position tire and is probably one of the most if not the most durable tires available. They are expensive but most of us would gladly spend the extra to avoid the hassles and damage form flat tires not to mention the added costs that are associated also.
Michelin XPS ribs are not described as trailer or all position tires.

Michelin Truck All Position / Trailer Tires

FastEagle
FastEagle is offline   Reply With Quote
Old 02-08-2015, 02:07 PM   #34
Senior Member
 
FastEagle's Avatar
 
Join Date: Sep 2009
Posts: 819
Quote:
Originally Posted by On the go View Post
FastEagle,
Thank you so much for the info and I think you're absolutely right about the axles having 6750# GAWR ea. we haven't had a chance to check yet. We added a generator and washer and dryer to the trailer plus it has auto level and all of this ads weight. Now, thanks to your advice we are trying to decide whether to get the Goodyear LTG614 or go with a 17.5 tire. Advice on that decision would be greatly appreciated.
Joatay
I think that decision will be decided by the need for new rims. Sometimes with trailers as heavy as yours with 16" tires the manufacturer will offer a LRG option (check your owners manual). If so, in your case, your current rims may have the capacity for LRG tires. They will serve you well, especially if you keep them at 110 psi.

FastEagle

p.s. If you go with 17.5" tires be careful of their speed ratings. Many of them have a 62 MPH speed rating.
FastEagle is offline   Reply With Quote
Old 02-08-2015, 02:48 PM   #35
Member
 
Join Date: Jan 2015
Location: Alabama
Posts: 51
Some of the Marathons are made in China now. A lot of the boat builders have gone to Carlisle. See what they have to offer in ST tires.
__________________
Alrv is offline   Reply With Quote
Old 02-08-2015, 03:39 PM   #36
Member
 
Join Date: Mar 2012
Location: Cypress Texas
Posts: 60
Quote:
Originally Posted by FastEagle View Post
I think that decision will be decided by the need for new rims. Sometimes with trailers as heavy as yours with 16" tires the manufacturer will offer a LRG option (check your owners manual). If so, in your case, your current rims may have the capacity for LRG tires. They will serve you well, especially if you keep them at 110 psi.

FastEagle

p.s. If you go with 17.5" tires be careful of their speed ratings. Many of them have a 62 MPH speed rating.

FastEagle
Thanks for your input. I should have mentioned that we will be buying new rims as ours are made in China, don't want to chance a crack in them going down the road. Now we just need to decide on 16" or 17". The 17" are more but will spend it if they would be more desirable in the long run. This is our first 5th wheel so we are very new at this and really appreciate this forum and everyone's help.

On the go
__________________
On the go is offline   Reply With Quote
Old 02-08-2015, 03:47 PM   #37
Member
 
Join Date: Mar 2012
Location: Cypress Texas
Posts: 60
Quote:
Originally Posted by Alrv View Post
Some of the Marathons are made in China now. A lot of the boat builders have gone to Carlisle. See what they have to offer in ST tires.

Alrv
Our Marathons are made in China as are the rims so we will be changing both out. We will check out Carlisle. This is a new learning curve for us so we appreciate everyone's advice.

joatay
__________________
On the go is offline   Reply With Quote
Old 02-08-2015, 04:49 PM   #38
Registered User
 
Join Date: Aug 2014
Posts: 1,346
First thing is turn a claim with GY, I hope you still have the tire. Talk to them about them helping you with a set of GY G tires. A lot of people do that upgrade a lot.
__________________
Cummins12V98 is offline   Reply With Quote
Old 02-08-2015, 05:15 PM   #39
Senior Member
 
Workhorse Chassis Owner
Join Date: Feb 2015
Posts: 134
well, didn't realize that a Load G was available. Pulling Keystone Cougar 5th wheel, about 13k. I just had a blowout last week with a fully inflated tire at 50. Knew it immediately but still threw tread and of course, damage. I have checked a little into tires for it as I want to replace the full set. Only 5k on blown tire. Big O seemed to have a good price AND, also a road hazard warranty available. Only place I found a warranty on trailer tires. They also have many locations through US. What thought do any of you have on warranty's?
__________________
SDCOToyhaul is offline   Reply With Quote
Old 02-08-2015, 07:47 PM   #40
Junior Member
 
Join Date: Jan 2014
Posts: 13
Tires for my fifth wheel

Going to upgrade my Powerking 235/80x16 tires to Geo Star G574 LT235/85x16 14 ply tires on my Alpine next week. Ran one year on the original tires and have seen to many pictures of folks with lots of damage. Not going to chance it.. Only tow at 62 and use a TST507 to monitor tire pressures and temps. The Powerkings still look like new but from Many of the pictures I've seen looks are very deceiving
__________________
Cvsteed is offline   Reply With Quote
Old 02-09-2015, 02:10 AM   #41
Registered User
 
Join Date: Aug 2014
Posts: 1,346
Stick with quality US Made tires!
__________________
Cummins12V98 is offline   Reply With Quote
Old 02-09-2015, 05:09 AM   #42
Senior Member
 
caissiel's Avatar
 
Join Date: Oct 2011
Posts: 1,312
For me the ST tires are junk. Any LT tires will do. Mine are Lt load range G and made in China. They are 6 years old and 49k miles on them and not planning changing them soon. The Sailun are possibly the best bet for replacement.
If 7k axles no ST tires will do and the rims are G rated. My rims are also Chinese made.
__________________

__________________
Barbara and Laurent, Hartland Big Country 3500RL. 39 ft long and 15500 GVW.
2005 Ford F250 SD, XL F250 4x4, Long Box, 6.0L Diesel, 6 Speed Stick, Hypertech Max Energy for Fuel mileage of 21 MPusG empty, 12.6 MPusG pulling the BC. ScangaugeII for display..
caissiel is offline   Reply With Quote
Reply

Tags
tires



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
19.5" Truck Wheels and Tires drfife Excel Owner's Forum 26 11-25-2014 04:09 PM
Tires Recall (check your tires) TCHB Class C Motorhome Discussions 37 09-03-2014 09:49 PM
Dolly tires sliding in turns with Tow Dolly hdzcar Toads and Motorhome Related Towing 9 08-13-2014 05:58 PM
Changing out PS tires to LT tires? Help! Sheripoms Trailer Towing and Tow Vehicles Discussion 9 04-01-2014 09:16 PM
5th wheel - strength, durability, with lift? Palmeris Full-Timers 6 03-17-2014 12:16 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:34 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.