Use the chalk test http://www.fourwheeler.com/how-to/wh...sure-pointers/

 

As was mentioned, tire type, driving conditions, and personal opinions on ride quality all play a role.

With that said, I run my 33s at 30 psi and am quite happy.

 

I've always ran 32-35. Seems fine to me. Might be a tad rough but I didn't get a jeep to be comfortable anyway

 

mine are at 20. they wear just fine.

 

When my KM2s were brand new I paid very close attention to the molding pins (or whatever they're called). The shop had them at 35 when first mounted but the pins seemed to wear in the center more. 30 produced the most even wear.

 

My KM2's have 30psi with 7oz of BB's and they are wearing even

 

I did a psuedo chalk test with all the road salt in the work parking lot. Honestly looks like they would do better with the fronts at 18 and rear at 16. Stiff *** Interco sidewalls? I don't know

 

Funny. I have never seen such low pressure guys in my life! LOL

Don't see how you stand squishy/floaty tires?

If a customer came in with 30 psi in his tires I would air them up for him.

Air pressure to a point is preference. So I am not saying wrong or right. I am just saying....

 

Also with today's quality tires you will get a nice flat tread patch whether you are at 15 or 50 lbs.

Shoot my remoulds look identical at 7psi as they do 40 psi. Outside of the bulges in the sidewall. LOL

 

I just can't see y anybody would run that low of psi all that's going to cause is for the tire to warm up faster on the road and could cause a blow out and wear out faster...like I said before I run 30psi on the road and round 10psi when wheelin and if the roads get slick with snow & ice I low the psi alittle. If u don't like our $0.02 go by a tire dealer and ask see what they say!

 

We run our KM2s at 15 on the trail and run back and forth to the campground on the highway without airing-up. Now that's a squishy ride. Somebody will always say "We'll just take it easy on the way back" and then they end up passing sports cars like it's an F1 race.

 

Lately I have been running about 25psi on the street. I am not too concerned with them wearing out pre-maturely though. My tires are load range D they hold about 3300lbs per corner. At 25psi they don't look like they are low on air at all.