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-   -   Tire pressure suggestions (http://www.wranglerforum.com/f218/tire-pressure-suggestions-247601.html)

jeeps4u2nv88 06-06-2013 01:33 PM

Tire pressure suggestions
 
I have a 1988 YJ that has 32" tires on 15" rims. The Jeep is lifted 2" with a body lift and 3" of suspension lift. Any suggestions on what pressure to run the tires at? The jeep is driven 90% of the time on the street. I want the tires to last as long as possible but want the Jeep to run as smooth as possible as well.

Thanks!

Xpress 06-06-2013 01:35 PM

I'd suggest around 30psi.

SuperMidget 06-06-2013 09:26 PM

depends on the tire type not just the size, what brand/style tire are you running?

petercass88 06-06-2013 09:31 PM

not to thread jack... but i have the same question! I have 33" BFG all terrains. Right now i have them aired up to 31 PSI for road use. Also what do you air them down to for off road use for mud/rocks etc.?

jeeps4u2nv88 06-07-2013 08:30 AM

I'm running 32" BFG Mud Terrain T/A's

Scott-CJ8 06-07-2013 01:34 PM

I would run 30-35 psi on the street, about 15 psi on the trail, and go down to about 5 psi on the rocks. But that's my preference, you may like something different on the trail... it depends on the terrain mostly.

roadyrob 06-07-2013 01:49 PM

do a chalk test, draw a heavy line across the tire drive a few feet and check. if the center is gone you have to much pressure, edges to little. I run 28 in 31 10.50's.

tigerblood 06-07-2013 02:06 PM

Quote:

Originally Posted by roadyrob (Post 3836097)
do a chalk test, draw a heavy line across the tire drive a few feet and check. if the center is gone you have to much pressure, edges to little. I run 28 in 31 10.50's.

ive never heard this, but it seems like a great idea, im going to give it a try this weekend, I currently have 30 psi in my BFG AT's

Mbclark 06-07-2013 02:27 PM

Lots of good advice here....I did the chalk test and found 24 to be the magic number for my 35's

petercass88 06-07-2013 02:33 PM

Quote:

Originally Posted by tigerblood (Post 3836160)
ive never heard this, but it seems like a great idea, im going to give it a try this weekend, I currently have 30 psi in my BFG AT's

Please let me know what PSI you discover to be the best for the 33" BFG ATs, we have the same tires :)

tigerblood 06-07-2013 03:05 PM

will do

CHL 06-07-2013 05:17 PM

Quote:

Originally Posted by roadyrob (Post 3836097)
do a chalk test, draw a heavy line across the tire drive a few feet and check. if the center is gone you have to much pressure, edges to little. I run 28 in 31 10.50's.

I kinda remember this suggestion. But I thought you need to have the tires at normal operating temperature and driving more than a few feet.:confused:

Iheskitt 06-07-2013 09:10 PM

I do 40-45 psi on 31s for max fuel economy. Mine is on the road 100% of the time so I can't speak for trail psi

petercass88 06-07-2013 09:23 PM

that sounds really over inflated for a 31" tire... no?

jokerchief462 06-07-2013 09:25 PM

Run the recommended pressure and then if you don't like the ride adjust down or up a couple pounds at a time until you find what works for you. It took a couple weeks and mine likes 29 psi all around.

roadyrob 06-07-2013 09:45 PM

heres a vid an the chalk test
chalking your tires for better wear and performance - YouTube

Iheskitt 06-09-2013 09:33 AM

Might be a little, I don't know


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