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Offline Swaggie

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Re: tyre pressures
« Reply #25 on: July 28, 2012, 03:43:45 PM »
Quote from: gacoxd on July 27, 2012, 10:00:06 PM
OK. I'll bite.

Whats this 4psi Rule?

Damo


Ok Damo i'll bite and answer  ;D ;D....Theres a bit of reading to it...Links below.

http://www.aawen4x4.com.au/index.php?option=com_content&view=article&id=1:4psi-rule&catid=2:current&Itemid=7

Goodluck  :laugh:
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Offline zed

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Re: tyre pressures
« Reply #26 on: July 28, 2012, 07:19:32 PM »
Quote from: Eamonn on July 28, 2012, 01:29:35 PM
Has a lot to do with the sand, I can run all over Fraser Island with 28PSI in 4WD and 20 in trailer, however get onto Stockton for example 4wd goes down to 12-14PSI and trailer down to 10PSI. Have you got a compressor mate. If not may want to get one sorted that way you can play around not having to worry about over deflating. Pump up a bit and move on....

I agree, stockton is a lot softer in places than any beach i've driven on in se qld including fraser and moreton islands. I normally drop to 18psi in sand regardless and then lower if it gets softer
« Last Edit: July 28, 2012, 07:22:40 PM by zed »
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Offline JU5T1N

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Re: tyre pressures
« Reply #27 on: July 28, 2012, 09:37:48 PM »
Quote from: ozbogwam on July 27, 2012, 08:29:02 PM
Will depend on tyre size, vehicle/trailer weight. In my GU on 33s I'll run about 34 on road and about 18 or below offroad.

On my old Suzuki on 35s I'd run it at about 20 on road and about 8 offroad.

You soon get an idea of what works for you but you will be amazed at the difference dropping your pressure has when offroad.
My Suzuki was 25 on the black top and ranged from 1.5-8 rocks - sand (loved them bead locks)
Patrol = 42 on road & 12-18 off road
Jayco Swan OB = 42 road & 18 off road

Every drivers form is different when 4wding. Some go at obstacles and take corners faster then others requiring higher pressures. I find its a case of trial and error. Try a pressure and drive accordingly to it, feel what the car is doing. Also old or new and different tyre brands require different pressures. When I put new Boggers on my Suzuki I ran without the valves in on the first trip to get the sidewalls to start flexing as they were around 1"thick
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Offline Tjupurula

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Re: tyre pressures
« Reply #28 on: July 28, 2012, 09:52:01 PM »
I run my tyres at a constant 36 front and 38 back, and I see so little "blacktop" that I do not even bother adjusting them when I do.  I find around here that lower pressures put the walls too close to the ground, and that is when tyre walls get cut.  Of course when on sand and the like the tyres go down a bit, but that is not often these days either.
Regards
Tjupurula
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Offline Eski

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Re: tyre pressures
« Reply #29 on: July 28, 2012, 10:01:30 PM »
Cities are where people are too busy to live, out here, I haven't got the time to be busy.

I'll agree to that one....
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Offline Tjupurula

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Re: tyre pressures
« Reply #30 on: July 28, 2012, 10:19:50 PM »
Quote from: Eski on July 28, 2012, 10:01:30 PM
Cities are where people are too busy to live, out here, I haven't got the time to be busy.

I'll agree to that one....

That is just me boasting, as I live every day what most people are saving up for when they get a holiday.
Regards
Tjupurula
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Offline gacoxd

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tyre pressures
« Reply #31 on: July 29, 2012, 12:20:45 AM »
Quote from: Swaggie on July 28, 2012, 03:43:45 PM
Ok Damo i'll bite and answer  ;D ;D....Theres a bit of reading to it...Links below.

http://www.aawen4x4.com.au/index.php?option=com_content&view=article&id=1:4psi-rule&catid=2:current&Itemid=7

Goodluck  :laugh:


Thanks Swaggie!
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Offline Swaggie

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Re: tyre pressures
« Reply #32 on: July 29, 2012, 04:59:40 PM »

No worries bud

Now you can work out if its 4 u.... ??? ???
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Offline JU5T1N

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Re: tyre pressures
« Reply #33 on: July 29, 2012, 07:43:36 PM »
Quote from: Tjupurula on July 28, 2012, 10:19:50 PM
That is just me boasting, as I live every day what most people are saving up for when they get a holiday.
Regards
Tjupurula
Living the dream
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Offline Tjupurula

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Re: tyre pressures
« Reply #34 on: July 29, 2012, 07:50:36 PM »
Only during the dry season Justin, once it gets wet, then it is hard work, getting out of bogs almost daily, getting others out of regular bogs, and occasionally being rained in for m6 - 8 weeks without fresh supplies.  We always carry enough tinned stuff.
Actually, it is during the wet that I drop my tyres right down to the 20's, and that often avoids bogs.
Regards
Tjupurula
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Offline Symon

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Re: tyre pressures
« Reply #35 on: July 29, 2012, 08:18:30 PM »
It depends so much on tyre type and size, and what vehicle you have that it is impossible to make any particular rule as to what pressures you should run.  I read the 4PSI rule, and I agree it is crap as well.

With my D40 Navara with 31" MT ATZ's I ran 40,42,40 (front, rear, trailer) on the blacktop and when I hit sand I would drop them to 30, 32, 30 and go anywhere.  Only once I had to drop them lower and that was only to about 24 PSI.

Now that I have my 79 which is a heavy bugger, with 33" MT ATZ's I run 46, 48, 40 on the blacktop and on sand I have to go down to 16, 18, 20 or I'll get bogged in the first 20m.
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Offline JU5T1N

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Re: tyre pressures
« Reply #36 on: July 29, 2012, 08:30:48 PM »
Quote from: Tjupurula on July 29, 2012, 07:50:36 PM
Only during the dry season Justin, once it gets wet, then it is hard work, getting out of bogs almost daily, getting others out of regular bogs, and occasionally being rained in for m6 - 8 weeks without fresh supplies.  We always carry enough tinned stuff.
Actually, it is during the wet that I drop my tyres right down to the 20's, and that often avoids bogs.
Regards
Tjupurula
These for wet season tyres perhaps
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Offline mandsmiddleton

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Re: tyre pressures
« Reply #37 on: July 29, 2012, 09:26:49 PM »
Yep, down to 18 - 20.
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Offline SteveandViv

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Re: tyre pressures
« Reply #38 on: July 30, 2012, 12:24:29 AM »
Quote from: Hairs on July 27, 2012, 04:05:00 PM
Yeap, same here.
40-42-40 on the Black Top.
 ;D

Same....
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Offline SteveandViv

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Re: tyre pressures
« Reply #39 on: July 30, 2012, 12:26:31 AM »
Quote from: Tjupurula on July 29, 2012, 07:50:36 PM
Only during the dry season Justin, once it gets wet, then it is hard work, getting out of bogs almost daily, getting others out of regular bogs, and occasionally being rained in for m6 - 8 weeks without fresh supplies.  We always carry enough tinned stuff.
Actually, it is during the wet that I drop my tyres right down to the 20's, and that often avoids bogs.
Regards
Tjupurula

Let me know next time and I'll bake you a fresh pie and fly it out  ;D
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Offline Tjupurula

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Re: tyre pressures
« Reply #40 on: July 30, 2012, 12:57:32 AM »
Quote from: JU5T1N on July 29, 2012, 08:30:48 PM
These for wet season tyres perhaps



Okau Justin, time to tell me what cariety of tyres they are.  They look seriously like good mud tyres.
Regards
Tjupurula
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Offline Hairs

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Re: tyre pressures
« Reply #41 on: July 30, 2012, 06:16:18 AM »
Quote from: Tjupurula on July 30, 2012, 12:57:32 AM
Okau Justin, time to tell me what cariety of tyres they are.  They look seriously like good mud tyres.
Regards
Tjupurula

Maybe he made them like this
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Offline JU5T1N

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tyre pressures
« Reply #42 on: July 30, 2012, 06:48:48 AM »
Quote from: Tjupurula on July 30, 2012, 12:57:32 AM
Okau Justin, time to tell me what cariety of tyres they are.  They look seriously like good mud tyres.
Regards
Tjupurula
there Super Swamper Boggers. I ran them on my comp truck. The grip in mud is unbelievable. Also side wall strengths way above any BF, Coopers or the likes. I never had a side wall blow out, and I used these for many seasons. They would be like comparing a car to a locked diff 4wd in the mud.
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Offline JU5T1N

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tyre pressures
« Reply #43 on: July 30, 2012, 06:52:47 AM »
Quote from: Hairs on July 30, 2012, 06:16:18 AM
Maybe he made them like this

these are Super Swamper also just a different tread pattern. The cut the treads to get more lugs, allows more tyre flex and more grip in rocks....a little extreme tho
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