Off-road tire pressure

abecker

Well-Known Member
First Name
Andy
Joined
Apr 20, 2018
Messages
297
Reaction score
236
Location
NC
Vehicle(s)
2018 JL Rubicon
What tire pressure is good for the 33" KO2s when off-road?





Advertisement

 

bilash31

Well-Known Member
Joined
May 17, 2017
Messages
399
Reaction score
377
Location
PA
Vehicle(s)
'14 JKU, '18 GC
Depends. What kind of off-roading?
Simply dirt roads? Mud? Sand? Rocks?
 
OP
abecker

abecker

Well-Known Member
First Name
Andy
Joined
Apr 20, 2018
Messages
297
Reaction score
236
Location
NC
Vehicle(s)
2018 JL Rubicon
  • Thread starter
  • Thread Starter
  • #3
Dirt trails with some rocks. Mostly easier trails.
 

OnlyOne

Well-Known Member
Joined
Feb 17, 2018
Messages
1,533
Reaction score
2,715
Location
Eagle, Colorado
Vehicle(s)
2020 F150 3.5 /2019 Mustang GT PP1 A10 whipped
15 is pretty safe. I usually go down to about 12 give or take.
 

Jeepsk8

Well-Known Member
Joined
May 19, 2018
Messages
1,128
Reaction score
4,076
Location
Sierra Vista, AZ
Vehicle(s)
2020 JLUR
You're good down to 11-12 psi. It really depends on the rocks you encounter, if they are pointy definitely air down, that will help with traction and reduce the likelihood of a puncture. Airing down also helps with smoothing out the bumps typically found on dirt roads / trails.
 

JASPER

Well-Known Member
First Name
Wayolife Sucks
Joined
Feb 10, 2018
Messages
460
Reaction score
220
Location
Tucson
Vehicle(s)
2018 JLU Rubicon and 2014 JK 2dr
8 TO 10 LB
 

NFRs2000NYC

Well-Known Member
First Name
David
Joined
Nov 28, 2017
Messages
503
Reaction score
436
Location
NYC/NJ
Vehicle(s)
2014 Jeep Wrangler Unlimited Rubicon
The PSI you run depends on the speed you plan on wheeling. at low PSI, in the low teens, you are going to pop/shred your tires if you drive quickly. Pressures like that are made for slow going rock crawling, hardcore stuff. You'd want to be in the low to mid 20s for gravel/dirt, and maybe high teens for corrugations.
 

OnlyOne

Well-Known Member
Joined
Feb 17, 2018
Messages
1,533
Reaction score
2,715
Location
Eagle, Colorado
Vehicle(s)
2020 F150 3.5 /2019 Mustang GT PP1 A10 whipped
The PSI you run depends on the speed you plan on wheeling. at low PSI, in the low teens, you are going to pop/shred your tires if you drive quickly. Pressures like that are made for slow going rock crawling, hardcore stuff. You'd want to be in the low to mid 20s for gravel/dirt, and maybe high teens for corrugations.
No, you wont shred your tires in gravel or dirt at low pressures. On pavement where a lot of heat builds up, you will want to limit the miles you put on them even though I have run 30-40 miles at 50-60 mph at 12 psi.

Just use common sense. If you're on a stock 7.5" wheel with 12.5" wide tires, you could go down to 10 pretty safely (poor mans bead lock). Under that it would be best to have a true bead lock wheel.

As far as stock 33's as I said before, 15 is pretty safe at most speeds.
 
OP
abecker

abecker

Well-Known Member
First Name
Andy
Joined
Apr 20, 2018
Messages
297
Reaction score
236
Location
NC
Vehicle(s)
2018 JL Rubicon
  • Thread starter
  • Thread Starter
  • #11
Thanks everyone for the replies, I'm thinking i'll probably shoot for around 20 psi. I heard from someone with a 2018 Rubicon that the last time they went to Uwharrie (which is where I am going), they didn't even have to air down their tires. Now just deciding if I should remove the plastic air dam on the sport.
 

NFRs2000NYC

Well-Known Member
First Name
David
Joined
Nov 28, 2017
Messages
503
Reaction score
436
Location
NYC/NJ
Vehicle(s)
2014 Jeep Wrangler Unlimited Rubicon
No, you wont shred your tires in gravel or dirt at low pressures. On pavement where a lot of heat builds up, you will want to limit the miles you put on them even though I have run 30-40 miles at 50-60 mph at 12 psi.

Just use common sense. If you're on a stock 7.5" wheel with 12.5" wide tires, you could go down to 10 pretty safely (poor mans bead lock). Under that it would be best to have a true bead lock wheel.

As far as stock 33's as I said before, 15 is pretty safe at most speeds.
If you run a 33" C rated tire at 8-10 psi while going 40mph through graded gravel, youll damage the tires, guaranteed.
 

Jeepsk8

Well-Known Member
Joined
May 19, 2018
Messages
1,128
Reaction score
4,076
Location
Sierra Vista, AZ
Vehicle(s)
2020 JLUR
Thanks everyone for the replies, I'm thinking i'll probably shoot for around 20 psi. I heard from someone with a 2018 Rubicon that the last time they went to Uwharrie (which is where I am going), they didn't even have to air down their tires. Now just deciding if I should remove the plastic air dam on the sport.
It kind of depends what trails you plan on hitting really. If you aren't going to Daniel or Dickey Bell you should be just fine at 20 lbs. If you find yourself having some traction difficulties, air down a little more but don't go below 10 lbs for sure. I rocked stock Rubicon JK tires at 12 lbs all day long on all the Uwharrie trails. Air dam comes off easy. Disconnect the front sway bar once you are there and reconnect before you go home ;)
 

Zandcwhite

Well-Known Member
First Name
Zach
Joined
Sep 4, 2019
Messages
661
Reaction score
817
Location
Patterson, ca
Vehicle(s)
2019 jlur
I usually go 18-20 psi for general trail rides. The beauty of staying up that high is you can drive home on the freeway (and even daily for weeks after) without issue. 8 psi on the freeway could damage tires, 20 psi not in the least bit.
 

Zandcwhite

Well-Known Member
First Name
Zach
Joined
Sep 4, 2019
Messages
661
Reaction score
817
Location
Patterson, ca
Vehicle(s)
2019 jlur
If you run a 33" C rated tire at 8-10 psi while going 40mph through graded gravel, youll damage the tires, guaranteed.
Multiple teams have run the Baja 1000 on ko2's at 10-14 psi, you should let them know that they are damaging their tires...guaranteed. Low to mid 20's for gravel/dirt? I wonder how they can race on half that pressure, at 3 times the speed, on that same terrain, for 1,000 miles?
 

Advertisement




Done Right LED
 



Advertisement
Top