Told to run 20 PSI on MTR Kevlars? Does this not seem really low?
JK Newbie
Joined: Mar 2013
Posts: 85
Likes: 2
From: Atlanta
I come from a lengthy tire shop background and I was very skeptical about running the tires at low pressure as you are. After a lot of experimentation I found that 24 to 26 PSI is best for D and E rated tires on a JK. Any more than that and you will notice a crown in the middle of the tread leading to flightier steering and the centers wearing out before the edges. One thing you never want to do though is adjust tire pressure to compensate for ride quality. This can mask issues and lead to tire failure. I have been running 25 PSI on my 38's for 3 years and have great wear patterns and exceptional tread life. I also run the rig at 80+ mph regularly and don't get the loose feel caused by a distorting tire (caused by low air pressure). Every tire is a bit different but if you stay in the upper to mid 20's for PSI, I think you'll be happy with the results.
JK Newbie
Joined: Apr 2013
Posts: 37
Likes: 0
From: Sandy, Utah
As far as your DD question, the answer is yes. I have an 08 JKUR with 38's. I put about 15k a year on it as a DD and run 25 PSI. I still have a lot of tread left after 35k+ miles and run at high freeway speeds regularly with no issues.