Jeep Wrangler Forum banner

1 - 20 of 30 Posts

·
Registered
Joined
·
170 Posts
Discussion Starter #1
Based on your experience, what is the best tire pressure to run 35" BFG KM2s at for daily driving. Aiming for longevity and even wear above ride comfort.
 

·
Registered
Joined
·
554 Posts
Based on your experience, what is the best tire pressure to run 35" BFG KM2s at for daily driving. Aiming for longevity and even wear above ride comfort.
Chalk test it to see what pressure will give you the best wear, from what I've read most people run about 30 on 35s with 17" wheels which is what I'm at but the best bet is to chalk test and as you probably already know re-chalk test in the summer and winter as the warmer/colder temps change your tire pressure.

And if you don't know what the chalk test is which you probably do so ignore the rest of this post but, you get a piece of chalk and cover a part of you tire with the chalk make sure u get the full width of tread and then drive forward just a couple feet enough for you tires to rotate once or twice and look where the chalk wore off. If it wears off in the middle more that the edges you need to deflate the tires a little bit if it wears more on the edges then you need it inflate them a little more. This will give you the most even wear and longevity.

When i first had my 35s on I ran them way too high and the middle wore out more, now I've dropped them down to wear correctly and my ride is a lot better too.
 

·
Registered
Joined
·
170 Posts
Discussion Starter #3
Appreciate it. I plan to chalk test it this week as I'm pretty sure they're a little over inflated.
 

·
Registered
Joined
·
4,713 Posts
28 to 30 PSI on the street is what everyone has told me.
 

·
Registered
Joined
·
170 Posts
Discussion Starter #6
Good copy, going to air them down. Guess I'll need that Procal sooner rather than later for the TPMS sensors. Thanks wveryine
 

·
Premium Member
Joined
·
470 Posts
I've got the KM2'S on my rig. I run 30 psi in my tires with great results.



image-2521025085.jpg
 

Attachments

·
Registered
Joined
·
170 Posts
Discussion Starter #8
Just ordered the Procal, going to air them down and set the TPMS sensors lower. Thanks for the pics and advice.
 

·
Registered
Joined
·
96 Posts
I run my tires a little higher when im in the city. I like to run 35 or so cold. Usually that's just for the MPGs. Gives you a harder ride overall but does help save some gas with those mud terrains.
 

·
Registered
Joined
·
250 Posts
30 psi with 5000 mile 5 tire roration. 18 months and 20k miles and mine still look great.
 

·
Registered
Joined
·
282 Posts
I emailed bf Goodrich to get the appropriate PSI for my KOs. I gave them all the info on my vehicle and they told me the best pressure. You can confirm with them. They get back pretty quickly.
 

·
Registered
Joined
·
170 Posts
Discussion Starter #12
I emailed bf Goodrich to get the appropriate PSI for my KOs. I gave them all the info on my vehicle and they told me the best pressure. You can confirm with them. They get back pretty quickly.
Great idea, thanks a bunch I'll send them a line.
 

·
Registered
Joined
·
49 Posts
I have a 2dr jkhr with 35x17 KM2's. When I called Goodrich they told me 28 lbs. would be what they would suggest to be at the correct weight carrying for those tires. But I generally run at 30 on the street.
 

·
Registered
Joined
·
37 Posts
Been running 30 psi and no issues. Even wear, and the ride is good. Air up to 32 - 35 for longer trips, but its a little harder ride. Chalk test works best.
 

·
Banned
Joined
·
2,349 Posts
I have a 2dr jkhr with 35x17 KM2's. When I called Goodrich they told me 28 lbs. would be what they would suggest to be at the correct weight carrying for those tires. But I generally run at 30 on the street.
I run mine between 28 and 30psi as well. Mine are KO2s though but I ran my Geolander 35" M/T at the same pressure
 

·
Registered
Joined
·
227 Posts
As was recommended, I have run mine at 40 psi or slightly lower at times. They are wearing great.
You have been given bad info, period. Everyone else, including BF Goodrich, runs closer to 30 psi on a 34-35" tire on their jeep. 40 psi, as you're running, will ride rough, be less safe due to a decreased contact patch with the road, wear out the center of the tire sooner, etc. 40 PSI is higher than a stock Jeep, with much smaller stock tires is recomended to run. The larger, wider the tire, the lower the pressure that's required to support the weight of the vehicle because it's being distributed over a larger surface area. Not much more to say.
 

·
Banned
Joined
·
2,349 Posts
As was recommended, I have run mine at 40 psi or slightly lower at times. They are wearing great.
Yeah I have never heard anyone give that advice. I guess it would also depend on if it's a c rated 35 or a E rated 35. Mine is E rated and I wouldn't dare ever run over 36lbs in mine and that would only be on a long trip. A c rated would be a softer Tire so maybe you could get away with 40lbs but damn the ride quality would have to suck.
 
1 - 20 of 30 Posts
Top