post #1 of Old 10-14-2008, 06:13 AM Thread Starter
TJeep_1999
Registered User
2015 JK Wrangler 
 
Join Date: Nov 2006
Location: Mount Holly, NC
Posts: 305
What Tire Pressure on/off road???

What tire pressure should I be running with 31x10.5xR15 tires? What should I air them down to when going off road? Not sure that it matters, but I have a TJ. Thanks!

TJeep_1999 is offline  
post #2 of Old 10-14-2008, 06:24 AM
BlackBellamy
Registered User
 
BlackBellamy's Avatar
1999 TJ Wrangler 
 
Join Date: Oct 2007
Location: The Empire State
Posts: 2,207
Personally I ran those tires at 28-30 on road, 12-14 off. Search this forum for "chalk test" - your pressure will depend on comfort vs mpg vs tire wear so pick your own pressures.

The top and doors on this vehicle are designed only for protection against the elements. Do not rely on the top and doors to contain occupants within the vehicle or to protect against injury during an accident. Wear seatbelts at all times.
BlackBellamy is offline  
post #3 of Old 10-14-2008, 07:26 AM
daveshan
Feeding the money pits
 
daveshan's Avatar
2001 TJ Wrangler 
 
Join Date: Jan 2007
Location: Durango CO
Posts: 1,367
Testing them yourself (chalk test) is the only way to determine a good street pressure.

Tires vary in sidewall stiffness greatly and tread width/rim width make a difference also. My BFG ATs on 15x8" rims need 24psi +- on the street, the Maxxis Creepy Crawlers on 15x 10" rims run on the center lugs only at anything more than 16psi.

Off road a bit of experimentation will show you what works best. If you post tire brand and rim width someone may have a similar set and can give you a baseline.

Dave Shannon
Durango, CO

'01 TJ Sahara
'98 XJ Sport
'00 XJ Wife's ride
Gone but not forgotten
'56CJ, '61 Wagon, '51 Pickup, '07 JK 4dr

daveshan is offline  
post #4 of Old 10-14-2008, 07:31 AM
JFranko
Registered User
1992 YJ Wrangler 
 
Join Date: Nov 2007
Location: Youngstown/Columbus Ohio
Posts: 1,666
I guess I'm running mine a little high compared to everyone else, I'm running 32" bfg mts at 35 psi, and they wear pretty even
JFranko is offline  
post #5 of Old 10-14-2008, 08:17 AM
Whybu1
Lets go Penguins!!!!
 
Whybu1's Avatar
2002 WJ 
 
Join Date: Apr 2002
Location: Camas
Posts: 3,208
Can't say for on-raod pressure in a 10.5 but the chalk test works well. Off-road you need to go down to at least 12 to really get any benefit.
Whybu1 is offline  
post #6 of Old 10-14-2008, 08:26 AM Thread Starter
TJeep_1999
Registered User
2015 JK Wrangler 
 
Join Date: Nov 2006
Location: Mount Holly, NC
Posts: 305
Quote:
Originally Posted by daveshan View Post
Off road a bit of experimentation will show you what works best. If you post tire brand and rim width someone may have a similar set and can give you a baseline.
I'm running 31 x 10.5 BFG ATs on 15x8" rims... Thanks for all the advice. I think I have a pretty good idea now. I always worry that I air down too much and will loose a bead. I think 12-15 and I should be fine. Thanks agian!
TJeep_1999 is offline  
post #7 of Old 10-14-2008, 09:50 AM
daveshan
Feeding the money pits
 
daveshan's Avatar
2001 TJ Wrangler 
 
Join Date: Jan 2007
Location: Durango CO
Posts: 1,367
Sounds about right, I used to run BFG ATs in the 33x10.5 size on Eagle 7" wide rims and ran 11-12psi on trails with no issues, 25psi was about right for street use.

Dave Shannon
Durango, CO

'01 TJ Sahara
'98 XJ Sport
'00 XJ Wife's ride
Gone but not forgotten
'56CJ, '61 Wagon, '51 Pickup, '07 JK 4dr

daveshan is offline  
Reply


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
What is the correct street tire pressure and off-road pressure? JeepinYahoo Tires & Wheels 84 04-11-2013 05:52 PM
On Road Tire Pressure For 33ís? cvd Tires & Wheels 5 09-14-2008 12:42 PM
What tire pressure for on road, 31" BFG AT's truckin88 Tires & Wheels 1 05-23-2008 01:51 AM
Best Tire Pressure to Use On & Off Road AtlJeeper Tires & Wheels 4 10-15-2006 02:39 PM
Off Road Tire Pressure Scafone Tires & Wheels 4 01-09-2003 10:41 PM

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 On
Refbacks are On

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