chris Posted June 17, 2013 Report Share Posted June 17, 2013 I was running 12 pound in the front and 10 in the back of my xj on every trail I run... And yes Darren I am working on it but was helping skippy with his rock rails last week Link to comment Share on other sites More sharing options...
Eastcoastcam Posted June 17, 2013 Report Share Posted June 17, 2013 So how low did people air down? On one of the trails last weekend, I went down to 11 pounds on my P rated tires, they looked pretty soft and I did manage to pick up a couple of sticks in a bead, no problem though. Actually, I did better on the trail this time than I did last time at 17 pounds. I know I read one comment about airing down. I ran 15psi all day yesterday and made it through everything. For me, that's a good starting place with room to airdown more if I have to. I have gone down to 8 psi on my TSL at times as well. I start at 15 now, so it doesn't take as long to air up at the end, provided I don't take it down any more through the trail. Link to comment Share on other sites More sharing options...
Cherokee96 Posted June 17, 2013 Report Share Posted June 17, 2013 I air down to 18 psi I run 31" tires under my cherokee and do fairly well with that set up, also can drive quite a ways on pavement without feeling too loose Link to comment Share on other sites More sharing options...
BlackPrintz Posted June 17, 2013 Report Share Posted June 17, 2013 Here's an article I posted in the Tech Section awhile ago. The basic idea is to inflate your tire to its maximum and measure the sidewall height, then airdown until your sidewall is 75% as high, that becomes your ideal pressure for trail runs. http://www.4x4tirereview.com/airdown.html Link to comment Share on other sites More sharing options...
backwoodsxj Posted June 17, 2013 Report Share Posted June 17, 2013 I ran 12psi last couple years but have them at 15 this year and that takes me home as well.Sweetland is very off camber and losing a bead in there is common so would'nt run too low anymore........ If I had to take to the 100 series hyw's I would air up to specs..... Link to comment Share on other sites More sharing options...
97 cherokee Posted June 17, 2013 Report Share Posted June 17, 2013 I run 15 or 12 in my 33s Link to comment Share on other sites More sharing options...
Cherokee96 Posted June 17, 2013 Report Share Posted June 17, 2013 ..... If I had to take to the 100 series hyw's I would air up to specs..... Deffinitely air up to specs, I tried driving home on the 102 at low psi and could barely maintain 100 kmh and was all over the road, had to exit and air up! Link to comment Share on other sites More sharing options...
BlackPrintz Posted June 17, 2013 Report Share Posted June 17, 2013 The SmittyBilt Comp-Air system I got from Peck's is one of the best investments I've made for my rig, I'd put it right up there with rock rails. It takes less than a minute per tire to air back up to my usual 32 pounds and a charged tank will do me about 2 dozen tire refills (6 trail runs). Link to comment Share on other sites More sharing options...
72LandRover88 Posted June 17, 2013 Report Share Posted June 17, 2013 11 gal air pig on sale at princess auto for something like $30 charged to 125PSI gets me from 15psi to 25 or 30 psi on all 4 corners. works well! Link to comment Share on other sites More sharing options...
97 cherokee Posted June 17, 2013 Report Share Posted June 17, 2013 I'm gonna get a arb compressor soon, good for 37s and lockers :) saves the time looking around and paying for air Link to comment Share on other sites More sharing options...
Roadtripper Posted June 17, 2013 Report Share Posted June 17, 2013 I love my VIAIR OBA. I run 10 PSI ofroad. 35x12.50x15 KM2 Link to comment Share on other sites More sharing options...
Potato Digger Posted June 17, 2013 Report Share Posted June 17, 2013 I dropped 15 out of my tires which brought them from 40 to 25 but wasn't enough, I plan on dropping to 20 or less next time it is hard to tell with the toyo mud terrain because they still look like they are up with no air in them. I think I was at the end of the trail for about an hour airing up. The FJ is a little heavier than the jeeps so I didn't want to go to low for the first time. It was great till I got into the soft dirt at the bottom of winch hill, them she really dug in! Link to comment Share on other sites More sharing options...
BlackPrintz Posted June 17, 2013 Report Share Posted June 17, 2013 Potato Digger, the magazine article I reposted above had some good info on airing down and how to know what's right for your specific tires. They were dropping air pressure in tires down to under 6 & 8 psi to find the correct trail pressure. It might be worth looking at Len's Viair setup or an air pig or a CO2 tank like I have. It'll only take us minutes to air up after a trail run. Link to comment Share on other sites More sharing options...
TRUXterra Posted June 17, 2013 Report Share Posted June 17, 2013 Ron, you could also buy a second air compressor and run 2 at the same time with the FJ running. That's something I'll be doing on the X until I get an OBA set-up. Link to comment Share on other sites More sharing options...
TomWood Posted June 18, 2013 Report Share Posted June 18, 2013 how did this thread go from trailrun to airing down tech? Lol Link to comment Share on other sites More sharing options...
90bronco Posted June 20, 2013 Report Share Posted June 20, 2013 glad you guys had fun , sorry i couldnt go but i had 4x4 racing . its a great trail , im glad i have friends that give us permission to use their land :) i built it wide enough for my rig although mine is short , nits nice to see other bigger rigs trying it , dont worry about the stepside box now , i hit fender , door and quarter on that tree . if i was there i woulda told you about that hole heheh been there / any how , glad you guys like what i built :smiley-transport027: ******* diggin Link to comment Share on other sites More sharing options...
Lil'monster Posted June 20, 2013 Report Share Posted June 20, 2013 Good to see you back on the sight Brother Link to comment Share on other sites More sharing options...
autumnwalker Posted June 20, 2013 Report Share Posted June 20, 2013 Good to see you back on the sight Brother +1 Stick around Alan! Good to hear from you again. Link to comment Share on other sites More sharing options...
Eastcoastcam Posted June 20, 2013 Report Share Posted June 20, 2013 glad you guys had fun , sorry i couldnt go but i had 4x4 racing . its a great trail , im glad i have friends that give us permission to use their land :) i built it wide enough for my rig although mine is short , nits nice to see other bigger rigs trying it , dont worry about the stepside box now , i hit fender , door and quarter on that tree . if i was there i woulda told you about that hole heheh been there / any how , glad you guys like what i built :smiley-transport027: f****** diggin You guys put an awesome trail together Allen, glad you found it :) Something to challenge most rigs in places, and a whole lot of entertainment value for watching everybody try! Don't be such a stranger, eh? Link to comment Share on other sites More sharing options...
90bronco Posted June 21, 2013 Report Share Posted June 21, 2013 glad you guys enjoyed it :smiley-transport027: Link to comment Share on other sites More sharing options...
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