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 07-04-2011, 04:06 PM   #1
Member
 
Join Date: Jul 2005
Location: Deming, NM
Posts: 51
A Tire Question

We haven't used our 28' 5th wheel since 2004 so I'm looking at new tires.
Since it has 225/75R 15 tires now with an OD of 28.3" could I replace them with 235/85R 16 OD of 31.5" and should I ? The distance between the front and rear tires is 5". I'm thinking, the same RPM as the tow vehicle. Thank you for your experience.
Matt
__________________

__________________
2011 F-350 Lariat Crewcab DRW, 2002 28' Lakota 5th wheel. Rudy and Lilly ,our smiling Dobermans.
Lester 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 07-05-2011, 07:52 PM   #2
Senior Member
 
Join Date: Apr 2004
Posts: 1,082
My used 28' 5er with two slides came with brand new ST225/75-15 D. I don't use ST tires on any trailer so a trip to my truck tire dealer was required.
The LT235/75-16 E was too tall to fit under my trailers wheel wells. I had to go with the LT215/85-16 E.

You have plenty of distance between the tires but how about clearance at the top and sides of the tire.

The trailers tire rpm vs the trucks tires rpm being equal has no advantage or disadvantage.
__________________

__________________
'03 Dodge 2500 Cummins HO 3.73 NV5600 Jacobs
'98 3500 DRW 454 4x4 4.10 crew cab
'97 Park Avanue RK 28' 2 slides
JIMNLIN is offline   Reply With Quote
Old 07-06-2011, 01:51 PM   #3
Member
 
Join Date: Jul 2005
Location: Deming, NM
Posts: 51
Thank YOU for the reply jimnlin.
Matt
__________________
2011 F-350 Lariat Crewcab DRW, 2002 28' Lakota 5th wheel. Rudy and Lilly ,our smiling Dobermans.
Lester is offline   Reply With Quote
Old 07-06-2011, 05:11 PM   #4
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 22,829
Well.. if the shoe fits go ahead and wear it..

In this case get out the old ruler and make sure there is enough room in the wheel well for the wheels, make sure you'll be able to get 'em in and out and that they will be far enough apart if it has dual axles..

Consider that the trailer will "Bottom out" on its suspension when you take those measurements.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 07-07-2011, 06:35 AM   #5
Senior Member
 
rgreen45's Avatar
 
Join Date: Jun 2011
Location: Bradenton, Fl.
Posts: 708
Quote:
Originally Posted by wa8yxm View Post
Consider that the trailer will "Bottom out" on its suspension when you take those measurements.
Excellent point!

There's no advantage to changing tire size. Changing tire quality however could be a plus. The bulk of the tire damage I see (I'm an RV tech) is caused by either under inflated tires letting go or old, dry-rotted tires failing.
__________________
rgreen45 is offline   Reply With Quote
Old 07-09-2011, 11:34 PM   #6
Senior Member
 
FastEagle's Avatar
 
Join Date: Sep 2009
Posts: 819
Quote:
Originally Posted by Lester View Post
We haven't used our 28' 5th wheel since 2004 so I'm looking at new tires.
Since it has 225/75R 15 tires now with an OD of 28.3" could I replace them with 235/85R 16 OD of 31.5" and should I ? The distance between the front and rear tires is 5". I'm thinking, the same RPM as the tow vehicle. Thank you for your experience.
Matt
Since you didn't give us a load range for the tires you're replacing I'll make one up for the math. The ST225/75R15D has a Load capacity of 2540#. With that in mind the LT225/75R16E with a load capacity of 2680# might just be the best replacement size for you. It's diameter - 29.4" - is closer than the larger tire you mentioned and it has a nicer load capacity than the ST if I've struck on the right size..

FastEagle
__________________

FastEagle is offline   Reply With Quote
Reply



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
New Tire Question davsal Travel Trailer Discussion 5 06-22-2011 08:44 PM
tire pressure question dbeck Winnebago Industries Owner's Forum 2 06-14-2011 04:43 PM
Michelin Tire Question Sacramento Bob MH-General Discussions & Problems 8 09-14-2010 09:09 AM
Tire Question teofff Monaco Owner's Forum 15 03-17-2010 10:13 PM
Spare Tire Age Question Jackm MH-General Discussions & Problems 13 06-04-2009 07:36 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:01 AM.


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