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twitchy
Joined: Fri Jul 25, 2008 11:30 pm Posts: 1086 Location: Lightning Ridge
Vehicle: 1999 Jimny
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 Posted: Fri Feb 13, 2009 11:14 am |
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joeblow wrote: twitchy wrote: Jesus h christ Joe, where the flying frog fuck did ya dig that bit of gold from????? The Higher the pressure the worse the braking? Low air pressure will INCREASE bad handling & braking. Out of all the above mentioned pressures If I was on the the tar I'd rather be with Cade or Jnr if something hairy happened. we have done the tests............i'm not talking purely off road settings, i'm talking about new tyres, new compund and sidewall, size, volume and vehicle weight. a car has an 'ideal' setting that will see it perform well in all conditions, go above this and braking suffers, go too far below and cornering with speed suffers, etc, etc.measure out a strech of road, than hit the brakes at 40 psi and see how far before you stop, then do the same at 20 psi, you will notice the vehicle stops a bucket load shorter before locking brakes. simple maths....try it yourself....i had to.
Spent 7 years fitting tyres & testing cars after wheel alignments & find it a tad odd.
I do understand at 950kg they don't need a lot of air to hold the rims off the ground. I also see so many people over tyre a sierra.
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Cade
Joined: Mon Sep 29, 2008 11:30 pm Posts: 317 Location: Perth
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 Posted: Fri Feb 13, 2009 12:03 pm |
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dropped to 27 for the drive to work
so much smoother  and breaking was gentle and much better
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DMAC

az supporter
Joined: Thu Jan 29, 2009 10:30 pm Posts: 1612 Location: North Brisbane
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 Posted: Fri Feb 13, 2009 12:56 pm |
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Whoa,
I just bought a 93 sierra been running 32 on road and dropping it to 18 offroad. It runs 30" Maxxis Trepadors. I thought I was going low! I suppose I have a legacy issue jumping from a 100 Series Landcruiser.
18 on the cruiser and you had to be a little careful. Can't wait to see how the Zuk goes dropping down to 10 -12 psi.
_________________ SS
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zookernator
Joined: Sun Mar 16, 2008 10:30 pm Posts: 813 Location: Tasmania
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 Posted: Fri Feb 13, 2009 5:24 pm |
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im running 25psi on road, and around 15psi off road with my 35" silverstones.. seems to work a treat!
_________________ F&R ARB air lockers, lux diffs, 4 link coil rear,
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Buddy
Joined: Sun Dec 14, 2008 10:30 pm Posts: 34 Location: S.Tas.
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 Posted: Sat Feb 14, 2009 1:42 am |
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31s on F100 8" rims. Bought a tyre wear guage and dropped the pressure in 2lb. increments from an initial 26 lbs. whilst guaging tyre wear. Guess what? Best wear across the tread was at 20lbs. same as tyre placard on vehicle ('87 NT hardtop). Never been game to go below 10lbs. off road--may have to revisit that one now!
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Built4thrashing
Joined: Wed May 21, 2008 11:30 pm Posts: 4972 Location: Dandenong .Vic
Vehicle: 1999 GV. Locked and Lifted
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 Posted: Sun Feb 15, 2009 4:36 pm |
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i run 31 silverstone extremes and o run 25-30 Psi on the road and normally drop them to 8-10 psi in the bush. have gone as low as 5psi b4 but that was coz tyre guage wasn't working properly. Never poped a bead but did once get shit in there when i busted a rear leaf spring.
_________________ B4T
Built by me to be driven like a rental
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something_else
Joined: Sun Apr 06, 2008 11:30 pm Posts: 819 Location: Pimpama
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 Posted: Sun Feb 15, 2009 6:16 pm |
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31's - 38 psi road use.
- 12 psi 4x4ing.
_________________ Lj81.
Ke20.
Baleno.
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keechox
Joined: Sat Dec 29, 2007 10:30 pm Posts: 242 Location: launceston Tasmania
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 Posted: Sun Feb 15, 2009 9:10 pm |
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32 x 10.5 muds, 15x8 rims, run 25-30lb on road and about 16lb offroad
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want33s

az supporter
Joined: Fri Nov 16, 2007 10:30 pm Posts: 8134 Location: Sunshine Coast Qld
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 Posted: Sun Feb 15, 2009 9:33 pm |
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zookieboi wrote: 31's - 38 psi road use. - 12 psi 4x4ing.
WOW... 38psi !!!
Your Zook must weigh 2.5 tonnes to need that much pressure!
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Taff
Joined: Sun Aug 13, 2006 11:30 pm Posts: 889 Location: Brisbane
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 Posted: Sun Feb 15, 2009 9:35 pm |
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i think its so he can do fulli sic skids.
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