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Zooknoob
Joined: Sat Jan 08, 2011 11:02 pm Posts: 94 Location: Perth, WA
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 Posted: Tue Jan 25, 2011 12:55 am |
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Just Wondering what everyone on here deflates to when going offroad
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tanshi

az supporter
Joined: Tue Jan 09, 2007 10:30 pm Posts: 7717 Location: Brisbane
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 Posted: Tue Jan 25, 2011 12:57 am |
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with out beadlocks, probably no less than 10,
depends on the terrain your driving and the tyres you have though
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got_bar_work
Joined: Sat May 15, 2010 8:30 pm Posts: 2214 Location: Brisbane
Vehicle: SQ625
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 Posted: Tue Jan 25, 2011 12:57 am |
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9 -10 in my vit 5-6 and the Sierra with 31 treps
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atari4x4

az supporter
Joined: Mon Dec 11, 2006 10:30 pm Posts: 34842 Location: East Radelayed
Vehicle: SV420+SV620 Vitara's
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 Posted: Tue Jan 25, 2011 12:57 am |
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depends.
_________________ You're just hating because you don't understand
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Rusho

Tubby Elfsdong
Joined: Sun Aug 02, 2009 11:30 pm Posts: 6501 Location: Northside, Brisbane
Vehicle: Coily Sierra
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 Posted: Tue Jan 25, 2011 12:57 am |
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What size you running? I have 30's deflate to about 8 psi offroad with rocks etc, about 12 ish on beach work
_________________ Shep is a closet jimny lover!!!!
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Ben_Sierra

az supporter
Joined: Wed Sep 30, 2009 11:30 pm Posts: 4472 Location: Perth
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 Posted: Tue Jan 25, 2011 12:59 am |
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Normally, straight to 10psi on any terrain... Let a bit more out if I need to later...
_________________ I want my old sig back 
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Zooknoob
Joined: Sat Jan 08, 2011 11:02 pm Posts: 94 Location: Perth, WA
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 Posted: Tue Jan 25, 2011 1:13 am |
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Yer I'm running 30s Shitty alterain Do use kno what's a good tyre to run
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TryHard
Joined: Thu May 13, 2010 1:49 am Posts: 1041 Location: Perth
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 Posted: Tue Jan 25, 2011 1:35 am |
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Zooknoob wrote: Yer I'm running 30s Shitty alterain Do use kno what's a good tyre to run
go down to 20 ish at seem to bag out good well maxxis
all depends on what ur doing
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Ben_Sierra

az supporter
Joined: Wed Sep 30, 2009 11:30 pm Posts: 4472 Location: Perth
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 Posted: Tue Jan 25, 2011 1:48 am |
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TryHard wrote: Zooknoob wrote: Yer I'm running 30s Shitty alterain Do use kno what's a good tyre to run go down to 20 ish at seem to bag out good well maxxis all depends on what ur doing
20??
I run that on the road!
_________________ I want my old sig back 
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TryHard
Joined: Thu May 13, 2010 1:49 am Posts: 1041 Location: Perth
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 Posted: Tue Jan 25, 2011 2:10 am |
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Ben_Sierra wrote: TryHard wrote: Zooknoob wrote: Yer I'm running 30s Shitty alterain Do use kno what's a good tyre to run go down to 20 ish at seem to bag out good well maxxis all depends on what ur doing 20?? I run that on the road!
eh i run 30 on road lol 10 off lol
well maby run 15 psi hahah
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Fatzook

az supporter
Joined: Sat Oct 27, 2007 11:30 pm Posts: 14977 Location: The Hills
Vehicle: Vitara, NGV
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 Posted: Tue Jan 25, 2011 2:31 am |
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I deflated mine to 3 yesterday. 5 was still too much.
_________________ 2013 GV 1998 SV420 ute
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mnemonix

az supporter
Joined: Sun Aug 16, 2009 11:30 pm Posts: 1409 Location: Newcastle NSW
Vehicle: '96 LWB trayback
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 Posted: Tue Jan 25, 2011 2:36 am |
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I'll often run 3 on the beach. Any more and I'll struggle on the bigger dunes.
I can fully remove the valve core and still be 100% driveable. The silverstones really are that stiff.
_________________ Twin charged twin cam twin locked webwheeler
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ajsr

az supporter
Joined: Sun Dec 28, 2008 10:30 pm Posts: 3712 Location: melb
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 Posted: Tue Jan 25, 2011 2:48 am |
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under 5psi for everything
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shep
Joined: Thu Mar 29, 2007 11:30 pm Posts: 14498 Location: Here there everywhere
Vehicle: A manly awesome man jimny
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 Posted: Tue Jan 25, 2011 2:48 am |
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7psi all the time except on dry sand then i will pretty much let all the air out.
_________________ JEEPJEEPJEEPJEEPJEEPJEEPJEEPJEEPJEEP
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11_evl
Joined: Tue Apr 10, 2007 11:30 pm Posts: 846 Location: logan reserve, Brisb
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 Posted: Tue Jan 25, 2011 2:56 am |
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7 PSI WITH MAXXIS
_________________ 92 sierra, 40" treps, full hydro, F&R steer, 106"W
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Zooknoob
Joined: Sat Jan 08, 2011 11:02 pm Posts: 94 Location: Perth, WA
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 Posted: Tue Jan 25, 2011 3:48 am |
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ajsr

az supporter
Joined: Sun Dec 28, 2008 10:30 pm Posts: 3712 Location: melb
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 Posted: Tue Jan 25, 2011 4:30 am |
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Zooknoob wrote: Bighorns?
its something you really need to figure out yourself.
it depends on tyre size , radial or bais ply and what you intend to drive and how fast.
10 -14 might be a safe starting place offroad, and go down from there if your not happy with the traction your getting
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dp87
Joined: Fri Jun 04, 2010 11:48 am Posts: 174 Location: sydney
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 Posted: Tue Jan 25, 2011 4:33 am |
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ive got 30inch coopers str's on my coily.
what should i be running on the road?
ive been driving with about 28psi but the car seems to bounce around a fair bit. should i lower my psi
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tanshi

az supporter
Joined: Tue Jan 09, 2007 10:30 pm Posts: 7717 Location: Brisbane
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 Posted: Tue Jan 25, 2011 4:42 am |
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i would think about 20 ish should be enough
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LAY80N
Joined: Tue Jul 28, 2009 11:30 pm Posts: 455 Location: Newcastle NSW
Vehicle: I drive your mum
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 Posted: Tue Jan 25, 2011 4:57 am |
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2psi
Layto....
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alien
Joined: Wed Mar 24, 2010 10:30 pm Posts: 16343 Location: Perth
Vehicle: '92 Sierra, 1.6efi, SPOA, 31s.
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 Posted: Tue Jan 25, 2011 5:24 am |
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31x10.5 BFG KM2 - rocks - 10psi all round, bags out HEAPS - enough that i let all the air out of a rear tyre because it was so deformed on a rock.
31x10.5 Simex ET - rocks - 5psi, hardly bagged out at all.
_________________ 
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TheOtherLeft
Joined: Sun Aug 27, 2006 11:30 pm Posts: 818 Location: Sydney
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 Posted: Tue Jan 25, 2011 9:03 am |
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In my GV I have 10 ply-rated tyres so on dirt 16psi, sand 10psi. Even then it doesn't bag very much. I think I could run down to 5psi if I was careful with my steering.
_________________ 2002 SWB GV
Lifted and Locked
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Ben_Sierra

az supporter
Joined: Wed Sep 30, 2009 11:30 pm Posts: 4472 Location: Perth
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 Posted: Tue Jan 25, 2011 9:04 am |
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alien wrote: 31x10.5 BFG KM2 - rocks - 10psi all round, bags out HEAPS - enough that i let all the air out of a rear tyre because it was so deformed on a rock.
Same with my Bighorn's at the Powerlines last time I was there...
Got a bead full of dirt and rocks too 
_________________ I want my old sig back 
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jonno_racing

az supporter
Joined: Wed Apr 15, 2009 11:30 pm Posts: 8164 Location: Tassie
Vehicle: suzuki
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 Posted: Tue Jan 25, 2011 11:35 am |
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Richo
Joined: Fri May 15, 2009 11:30 pm Posts: 104 Location: Perth
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 Posted: Tue Jan 25, 2011 11:38 am |
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30" cooper stt's on my coily, 5-10 on the beach 10-12 most other places and 25 on the road seems to work well for me.
Richo
_________________ 97 Coily 2" susp lift 2" body lift + more
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skyman
Joined: Wed Nov 17, 2010 2:06 pm Posts: 1328 Location: Yakima, wa (us)
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 Posted: Wed Jan 26, 2011 3:24 am |
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9-10 for high speed bumpy roads, 6lbs for crawling (BFG/MT 33x12.50's)
Although usually at the end of the run I only have 2lbs left and bark in the bead 
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96coily
Joined: Fri Jun 04, 2010 11:37 am Posts: 1420 Location: Perth Hills
Vehicle: 96 coily Awesome sticker Rust
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 Posted: Wed Jan 26, 2011 1:14 pm |
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50 kpa
_________________ I have issues
What are you looking at
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MacDaddy

az supporter
Joined: Thu Mar 26, 2009 10:30 pm Posts: 10453 Location: Perth, Australia
Vehicle: Jeep
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 Posted: Thu Jan 27, 2011 2:09 pm |
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TryHard wrote: Ben_Sierra wrote: TryHard wrote: Zooknoob wrote: Yer I'm running 30s Shitty alterain Do use kno what's a good tyre to run go down to 20 ish at seem to bag out good well maxxis all depends on what ur doing 20?? I run that on the road! eh i run 30 on road lol 10 off lol well maby run 15 psi hahah
 30psi is way to much, i dont run that in my GV, at 30psi in a Sierra it must rattle the teeth in your mouth its so hard
22 to 24psi is all you need in a Sierra for road... 10 psi is good for offroad... 
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MacDaddy

az supporter
Joined: Thu Mar 26, 2009 10:30 pm Posts: 10453 Location: Perth, Australia
Vehicle: Jeep
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 Posted: Thu Jan 27, 2011 2:20 pm |
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TheOtherLeft wrote: In my GV I have 10 ply-rated tyres so on dirt 16psi, sand 10psi. Even then it doesn't bag very much. I think I could run down to 5psi if I was careful with my steering.
I have Maxxis 6ply LT AT's on my GV, and i find the sidewalls a bit stiff, i normally go down to 14psi for everything, but on my last sand trip, i didnt get bogged and it didnt struggle at all, but i think i would have got further if i was down to 11 or 12psi, so will try that next time, because of the stiffer sidewall... 
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skyman
Joined: Wed Nov 17, 2010 2:06 pm Posts: 1328 Location: Yakima, wa (us)
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 Posted: Thu Jan 27, 2011 3:16 pm |
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Yeah on the road I run like 22 in the front max, and like 20-18 in the rear unless I am carrying a load.
I keep the front a little higher because of engine weight, and I like a stiffer sidewall for cornering on the road.
I was used to big cars and 35 psi all the time, but found that even 2 will knock my teeth out in the Sierra.
I run the 6-8 Lbs off road because of the terrain we have here. We have slippery rocks embedded in dirt that has a 2" layer of slimy sticky mud. \
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