View Full Version : Airing down?
NewJKInNC
08-07-2008, 06:12 PM
I've read the threads on airing down and most folks seem to air down from their stock 35psi to some where in the 12-20lb range.
My 2007 is stock except for the tires/rims - have BFGs (32) on pro-comp wheels but the psi on them for highway use is 65psi - going to Uwharrie this weekend (1st time off road) going to stick to the easy to moderate trails - what do I air down to??????
thanks in advance!
DallasJeeper
08-07-2008, 06:18 PM
65psi? :eek2: Wow, that seems awful high. How is the ride? Bumpy I'm guessing.
07JKRUBI
08-07-2008, 06:40 PM
65 psi does sound high.
There is a group of us from the forum meetind at the Eldorado Outpost Saturday at 9 AM tou should join us.:yup::thumbsup:
sandman
08-07-2008, 06:55 PM
65 PSI is way too high. I believe that is the max pressure the tire will tolerate, check the sticker on the door and you will see the proper PSI at which to run your tires. As for airing down it depends upon what you are doing, I take my stock tires and PSI down to about 15 PSI. I am in the desert and I do both rocks as well as sand.
axsys
08-07-2008, 06:59 PM
yea man, you are risking a tire blowing with them set that high. just set them to either whats on the door, or all at 35 and it should be much better
I've read the threads on airing down and most folks seem to air down from their stock 35psi to some where in the 12-20lb range.
My 2007 is stock except for the tires/rims - have BFGs (32) on pro-comp wheels but the psi on them for highway use is 65psi - going to Uwharrie this weekend (1st time off road) going to stick to the easy to moderate trails - what do I air down to??????
thanks in advance!
wow dude that is crazy high! I ran my 32's at 30psi on the street ,excellent ride and no issues.
R8R ROK
08-07-2008, 09:21 PM
I take my stock tires and PSI down to about 15 PSI. I am in the desert and I do both rocks as well as sand.
X2 on that , I asked W.O.L. at slickrock what he thought was best and he told me 14-15. That is what I have been doing it seems perfect for what I have been doing.
Keep in mind that when you air down you're trading ground clearance for a larger footprint. If you're only doing easy to moderate trails you shouldn't need to air down at all. But if you feel the need, airing down to ~20 PSI should give you a little more traction and help smooth out the bumps. :yup:
jeeperjkj
08-08-2008, 03:03 AM
I'll add to the PSI comments.
Once you switch to a different brand and/or size of tire, the manufacturer's recommendations as far as pressure go out the window.
65PSI is way too high, though. What tire is it? A little research will yeild a much better starting pressure and then you can adjust a bit to make the ride better.
NewJKInNC
08-08-2008, 04:20 AM
I'll add to the PSI comments.
Once you switch to a different brand and/or size of tire, the manufacturer's recommendations as far as pressure go out the window.
65PSI is way too high, though. What tire is it? A little research will yeild a much better starting pressure and then you can adjust a bit to make the ride better.
Well - They are BFG 265/75 R16's - purchased from 4wd already mounted on wheels - they came that way :-) but - I can always air them down !! - thanks for the advice - I'll let you know how it goes - looks like we are heading out today!!!! - I decided to take today off and go - could not wait any longer!!! - thanks again!
jeeperjkj
08-08-2008, 04:43 AM
Both the A/T KO and the T/A KM are rated for 3042 pounds @ 65 psi.
If you're runnin' them at 65psi, then you're tires are rated to support over 12,000 pounds!
Since your rig probably only weighs about 5,000 pounds, I'd say start somewhere around 30-35 psi or so and see how they react. Maybe do the chalk test to see how the tread is making contact with the ground.
Report back with your findings.
NewJKInNC
08-08-2008, 05:20 AM
Both the A/T KO and the T/A KM are rated for 3042 pounds @ 65 psi.
If you're runnin' them at 65psi, then you're tires are rated to support over 12,000 pounds!
Since your rig probably only weighs about 5,000 pounds, I'd say start somewhere around 30-35 psi or so and see how they react. Maybe do the chalk test to see how the tread is making contact with the ground.
Report back with your findings.
Will do - getting ready to head out - let you know when I get back what the results are!!!!
NewJKInNC
08-09-2008, 04:37 AM
Both the A/T KO and the T/A KM are rated for 3042 pounds @ 65 psi.
If you're runnin' them at 65psi, then you're tires are rated to support over 12,000 pounds!
Since your rig probably only weighs about 5,000 pounds, I'd say start somewhere around 30-35 psi or so and see how they react. Maybe do the chalk test to see how the tread is making contact with the ground.
Report back with your findings.
you guys were right as usual - went down to 35psi - better ride - chalk test reveals nice even flat tread all the way across - nice straight line = width of tread - thanks guys!!!
jeeperjkj
08-09-2008, 05:29 AM
No problem... that's what we're here for.
I actually can't believe I helped. I guess I AM good for something. I'll have to remind the wife of that.
NewJKInNC
08-09-2008, 12:30 PM
No problem... that's what we're here for.
I actually can't believe I helped. I guess I AM good for something. I'll have to remind the wife of that.
You bet - and now you have a witness:clap:
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