Tyre Pressure

Submitted: Sunday, Aug 29, 2010 at 08:56

ThreadID: 81021 Views:5040 Replies:4 FollowUps:4

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Clint & Chell

We have a 100 series land cruiser and a 25ft Jayco Sterling caravan.
Just wondering what sort of tyre pressure people run in the vehicle and the van with similar set up?

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Reply By: Member - Tom W (WA) - Sunday, Aug 29, 2010 at 10:03

Sunday, Aug 29, 2010 at 10:03

Gday clint & chell we have the same van but with patrol tug i run 42psi in the van & rear on the patrol & 36psi in the fronts seems to work but will interested in the replys as not done a lot of ks yet but we left yesterday on our next adventure cheers tom

AnswerID: 428806

Reply By: Bushranger1 - Sunday, Aug 29, 2010 at 11:26

Sunday, Aug 29, 2010 at 11:26

Hi Clint,
Well that all depends. You need to alter your pressure according to the road surface.
I travelled Australia for 2 years in a Hilux towing an off road camper trailer & I found the following worked for me. I had a full load including about 150L of fuel & another 150L of water.

1. Bitumen road. Front 28 PSI. Rear 35 PSI .Trailer 35 PSI.
2. Gravel Road. Front 28 PSI. Rear 28 PSI .Trailer 20 PSI.
1. Sand. Front 20 PSI. Rear 20 PSI .Trailer 20 PSI. (Sometimes a little less if the going got tough)

This seems to be one of the most argued points around the campfire so you will get all sorts of opinions. I had a guy tell me one night that these pressures were stupid & would not work. Well I got ONE yes ONE puncture in 2 years so you cant argue with that. Let me tell you I went into some VERY rough remote places too.

I also worked on a cattle station on the Gibb river road repairing vehicles & let me tell you the vast majority of tyre repairs I did were on cars running pressures that were too high. In addition to that I saw vehicles that were literally shaken apart because people get in their head if you put heaps of air in your tyres you will resist punctures. Wrong!

Anyway enjoy you trip. Should be great with all the rain.

AnswerID: 428811

Follow Up By: Joe Grace Doomadgee - Sunday, Aug 29, 2010 at 17:48

Sunday, Aug 29, 2010 at 17:48

I will back up "Bushranger1" on that one, we also are forever changing tyre pressures according to the conditions and we also have only had 3 flats in 2 years and trust me we travel on a daylie basis on some pretty cruppy roads .....
Also have seen heaps of suspension failures due to hard tyres, springs breaking, shocks break ect ......
Get a balloon and blow it up hard, slightest touch with anything sharp and it pops, blow up one soft and it takes a lot more to burst, tyres are the same, if you let it down a bit a rock will push into the sides and tread and not cut it, rock hard tyre will simply cut in and burst as would a balloon ......
The guide that "Bushranger" has given is spot on and i would use it as a starter and experiment a bit, i.e. if you have a heavy load you will need higher pressures but only you will know that and visual appeariance of the wall of the tyres will show it ...... (a 20 ton truck will have 120psi in it's tyres ....)

FollowupID: 699593

Reply By: Member - Graham H (QLD) - Sunday, Aug 29, 2010 at 13:26

Sunday, Aug 29, 2010 at 13:26

I ran 45 in the rears HOT 40 in the Fronts Hot and 50 in the van HOT

All on Bitumen roads

Best way is have them about 5-6 lb less in the morning as I found they always came up 6lb no matter what I set them at .

Always more than the 4lb rule that seems to be the bible ruling.

You have the same tyres as me I think so shouldnt be far out My tyre wear was good at those pressures.

AnswerID: 428821

Follow Up By: Clint & Chell - Sunday, Aug 29, 2010 at 18:17

Sunday, Aug 29, 2010 at 18:17

Cheers everyone. Appreciate the feedback.

FollowupID: 699599

Reply By: cobber - Sunday, Aug 29, 2010 at 18:52

Sunday, Aug 29, 2010 at 18:52

Landcruiser 100 series, 38psi front 42psi Rear with van on ( 38psi with it off) the Van 38psi all 4 tyres, run the same bitument or Gravel (Great Central Road) no problems never had any trouble with my tyres, just adjust speed to the condition of the road.

AnswerID: 428854

Follow Up By: Clint & Chell - Thursday, Sep 02, 2010 at 10:35

Thursday, Sep 02, 2010 at 10:35

Just checked pressure this morning. 40psi all around on the Landcruiser (cold) and 50 psi all round on the van (cold).
Judging from the posts above these sound a bit high.
It is a 24.75ft fully loaded van.
We have travelled from Coffs Harbour to Rockhampton and are about to head out to Carnarvon Gorge where 11ks are gravel.
Should I be dropping these pressures immediately?
Should I be taking pressures when tyres are hot only?
Cheers

FollowupID: 699905

Follow Up By: Member - Graham H (QLD) - Thursday, Sep 02, 2010 at 10:46

Thursday, Sep 02, 2010 at 10:46

Let your fronts down 5 lb and also the van down to 45 COLD

Take the pressure cold in the morning and again after an hour at highway speed that will tell you how much they are building up No more than 6lb would be good and the ones on the sunny side will be about 2-3 lb more than the shaded ones we havent had a puncture yet with the pressures we have been running and tyre wear is perfect

See what the gravels like for corrugations just slow down and dont worry 11 k wont hurt it

FollowupID: 699907