Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > Trailer Towing and Tow Vehicles Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 10-01-2013, 07:01 PM   #15
Senior Member
caissiel's Avatar
Join Date: Oct 2011
Posts: 1,312
Originally Posted by elkhornsun View Post
I have two friends who have both put thousands of miles towing 13,000 to 14,000 lb 5th-wheels using 3/4 ton diesel powered pickups with no problems at all. The DRW trucks get away with lower load range tires as there are 4 taking the place of 2.

Not at all difficult to find tires for 17 and 18 inch rims that provide 3750@80 PSI of load capacity of 7500 lbs. for the pair at the rear axle. Subtract the weight of the empty truck measured at a local scale and you will have the load that the tires can handle.

People mistakenly think that the load limit of the rear axle is based on the axle and its wheel bearings and it is not true with trucks. The limit is based on the weakest link when the truck left the factory and with the 3/4 ton trucks it is the tires and the rear leaf sprigs. Tires can be changed and helper springs can be added.

With my 2500HD the trailer weight would need to be over 16,000 lbs. to exceed the capacity of the rear axle, bearings, rims, tires, and springs, based on the modifications I have made.

If when traveling down the highways you check the number of 5th-wheel travel trailers being pulled by a SRW or DRW trailer you will find that more than 80% of the time they are being towed by a SRW truck.

What is very helpul in terms of ride comfort is a shock absorbing kingpin like the ones from TrailAir. Regardless fo the truck they help dampen the movement of the trailer and improve ride comfort for the driver and any passengers.
Totally agree with my 15000 trailer towed with my 2005 F250, for past 5 years. Not all 15000 trailers tow equally though. 7k axles are also required on the RV. And my SRW truck rides well and much better then any dually pulling my unit.
Driving in on an exit to a rest area I hit a huge pothole with my rear truck wheel in order to save the trailer wheels hitting it. Parked and noticed a U-Haul truck siting there with a flat and a bent wheel. The driver felt awfull bad as he said but I am not loaded heavy. I told him not to worry there was less then 80 psi in the rest of the tires and I made sure the service man added proper inflation. As I found out later, no one drive those trucks with full 80lbs because they ride to rough and U-haul has an awful time keeping full tire pressure and also includes most my friends with duellies. IMO properly inflated SRW tires are much safe the major of light loaded duelly tires that cannot hold the load if exposed to single tire loads.
At work I had to replace all duals on our heavy trailers due to constant flat tires that were caused by improper loading on rough terrain. The solution was the available super singles that actually outlasted the previous tires to the point that we never had any loading terrain issues.

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
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!



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

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:18 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.