Tire Pressure for Towing? - JeepForum.com

LinkBack Thread Tools
post #1 of 7 Old 08-18-2010, 09:23 PM Thread Starter
Chicken in a Turkey Suit
2003 WJ 
Join Date: Oct 2008
Location: Redmond
Posts: 8,532
Tire Pressure for Towing?

Question for the Gurus: My girlfriend is about to tow a U-haul trailer across the country. Tow rig is a 2003 WJ Overland. I'm not concerned about the rig handling the load - realistically its about 3000 lbs so it shouldn't be a problem.

The owner's manual doesn't mention a change in tire pressure for towing or heavy loads. Normally I run 2psi over factory recommended because I like it a little firmer. Any recommendations on tire pressure for towing? Tires are the stock size 235/65-17.

Thanks for your help!

billzcat1 is offline  
Sponsored Links
post #2 of 7 Old 08-19-2010, 12:58 PM
Registered User
1997 XJ Cherokee 
Join Date: Aug 2009
Location: Tucson, AZ
Posts: 310
I can't think of a number for pressure but if nothing else with the trailer loaded just fill them up until they aren't squatting real bad. But don't go over the max pressure. That's the best answer I can think of. lol

White 97 2 Door 4.0 5 Speed XJ
Nickell80 is offline  
post #3 of 7 Old 08-19-2010, 06:34 PM
Registered User
1999 XJ Cherokee 
Join Date: Aug 2006
Location: Cincinnati Ohio
Posts: 2,420
Tongue weight should not be much more than 10-15% of trailer total weight. 3000 lb Uhaul = ~400lb.

Check weight rating on tires and make sure that another 400lb on the rear wheels is not to much. Then, air up until you get out the squat like last poster said. Not more than max pressure on side of tire.

03 Rubicon; 99 xj with too much stuff to list; Unimog 406 (gone)
wilson1010 is offline  
post #4 of 7 Old 08-19-2010, 09:38 PM
Web Wheeler
1974 CJ5 
Join Date: Jan 2005
Location: Santa Maria
Posts: 1,636
Just run the max pressure and make sure to check it with a accurate gauge. I would also check it before the start of each day after the tires have cooled enough to not give a false reading.
thantos858 is offline  
post #5 of 7 Old 08-19-2010, 10:46 PM Thread Starter
Chicken in a Turkey Suit
2003 WJ 
Join Date: Oct 2008
Location: Redmond
Posts: 8,532
Thanks for the advice! I am sending her with an MV50 compressor and my Longacre gauge so she can fill it as needed.
billzcat1 is offline  
post #6 of 7 Old 09-02-2010, 07:43 AM
Web Wheeler
Join Date: Mar 2001
Location: Alger
Posts: 1,452
She shouldn't have an issue running at normal pressures, 5-over would be good. No real need to go to max pressure if the rig isn't overloaded. I towed a ~3500 pound trailer multiple times in my '99 without airing up the tires and they didn't hunker down at all. Hell, I towed a '79 F150 on a flatbed trailer and the tires did just fine (granted, they were 33x12.5 mudders).
horatio102 is offline  
post #7 of 7 Old 09-02-2010, 11:58 AM Thread Starter
Chicken in a Turkey Suit
2003 WJ 
Join Date: Oct 2008
Location: Redmond
Posts: 8,532
Well, she ran them at 40psi (max is 44) and had no troubles... except as they warmed up, the TPMS started sounding alarms every 60 seconds due to "over recommended pressure" when they reached 45psi warm. So she aired down to 38psi (which, coincidentally, is 5-over) and had no more problems. Thanks again for the advice!
billzcat1 is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Tire Pressure (35" BFG MT) krawler510 Trailers & Towing 0 10-02-2008 12:54 PM
Towing w/ rear tire carrier bumper YJ43 Trailers & Towing 5 04-07-2008 01:30 PM
- check your tire pressure - table General Discussion 5 03-28-2007 06:17 PM
Tire pressure Hanzo General Discussion 7 01-02-2005 09:08 PM
Tire pressure 97sahara General Discussion 5 03-04-2003 07:45 AM

Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome