tire pressure - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > Tires & Wheels

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 09-09-2010, 10:57 AM   #1
Jeeper
 
Userbrand's Avatar
 
Join Date: Sep 2010
Location: East Bay California
Posts: 23
Images: 4
tire pressure

I've recently put on some new 31 x 10.5 r15 and wondering what psi others are running on the road to get the best tire life. These are on my YJ if that matters for weight.

Userbrand is offline   Quote Quick Reply
Old 09-09-2010, 11:05 AM   #2
Jeeper
 
Ray - San Jose's Avatar
 
Join Date: Oct 2009
Location: ..checking GPS.. hang on...
Posts: 789
Images: 1
Start at 30 psi and chalk your tires. Draw a fat chalk line across the tread, drive forward about 50 feet, then look at the line. Gone in the middle, but a lot on the outside = your pressure is to high. Gone on the outside and a lot in the center = to low.

__________________
[ This space for rent ]
Ray - San Jose is offline   Quote Quick Reply
Old 09-09-2010, 11:38 AM   #3
I do my own stunts.

WF Supporting Member
 
yomondo's Avatar
 
Join Date: Sep 2010
Location: Burbank, CA
Posts: 2,795
Quote:
Originally Posted by Ray - San Jose View Post
Start at 30 psi and chalk your tires. Draw a fat chalk line across the tread, drive forward about 50 feet, then look at the line. Gone in the middle, but a lot on the outside = your pressure is to high. Gone on the outside and a lot in the center = to low.
This is good advise. Also keep in mind that air pressure inside the tire will increase when the tire gets hot, and also the faster the tire is rotating the more centrifugal force will narrow its shape. So if you drive mostly highway, a slightly lower PSI than what the chalk test tells you might work nicely.
yomondo is online now   Quote Quick Reply
Old 09-09-2010, 12:20 PM   #4
Jeeper
 
InfernoGirl's Avatar
 
Join Date: May 2009
Location: Newburgh IN
Posts: 11,419
You'll likely end up about 28 psi with 31's. But do as suggested above to get a good idea of where you are and which way to go. You'll find lower psi provides a more comfortable ride too...
__________________

Dirty Mudder column covers|

'01 Wrangler Sport, Sienna Pearl Mine
'07 Rubicon 2D, Flame Red His
'11 Wrangler Sport 4D, Black Ours...

Quote:
Originally Posted by Kate View Post
Not every girl, is a Jeep girl. We're a special breed.
InfernoGirl is offline   Quote Quick Reply
Old 09-10-2010, 12:15 AM   #5
Jeeper
 
Userbrand's Avatar
 
Join Date: Sep 2010
Location: East Bay California
Posts: 23
Images: 4
Thanks for the input. I actually have them at 28 psi now but I'll chalk them this weekend.

The place that installed them had one tire at 35 another at 20 and the other two at 32. Got to love budget shops. Walmart. Get what you pay for.
Userbrand is offline   Quote Quick Reply
Old 09-10-2010, 08:21 AM   #6
Jeeper
 
Ray - San Jose's Avatar
 
Join Date: Oct 2009
Location: ..checking GPS.. hang on...
Posts: 789
Images: 1
Chalking the tires is defiantly the best way. When my 33's were installed, the installer wanted to pump them up to 50 psi, even tho BFG states on the tire sticker not to ever exceed 40, even when installing! I told them to go to 32, and they did, even tho they didn't understand why I would want under inflated tires. My 33's are at 29 BTW.

Enjoy your new meats
__________________
[ This space for rent ]
Ray - San Jose is offline   Quote Quick Reply
Old 09-10-2010, 08:32 AM   #7
Newb
 
EarthCruzn's Avatar
 
Join Date: Sep 2010
Posts: 10
28-29 psi on mine, I did alot of highway driving last week and the wear was perfect at 65-70 mph.

EarthCruzn is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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.



Thread Tools

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tire Pressure Question bpm54 TJ General Discussion Forum 75 07-07-2011 09:15 PM
(potentially dumb) question about tire pressure AbbyK9 TJ General Discussion Forum 10 04-23-2010 11:55 AM
Tire Pressure - Remedial Review innocent bystander TJ General Discussion Forum 22 03-27-2009 10:24 AM
Tire Pressure scotiez General Jeep Discussion 15 04-08-2008 05:35 PM
Tire Pressure jj33002 YJ General Discussion Forum 8 03-26-2006 05:59 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 05:29 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC