Tyres again

Vince,

The plackard on the vehicle should give a range of pressures for the tyres depending on load and what work you are doping. Also on the side wall of the tyre usually in small print that is very hard to read it will give a max pressure and load.

I find the max pressure off the plackard is a good starting point for highway use. Pressures need to be adjusted depending on the road/track surface. That argument could go on for ever.

Duncs

Vince, i have 255/70/16 BFG AT's and was recomended 40 psi, my Explorer is 2 tonne, i've heard you have to adjust pressure for tar and dirt but have never done this as people have told me that it has know affect on handling that they have noticed, i will try it one day to see for myself though, only time i deflate is in soft sand. oh the placard pressure's are for comfort not handling.

About 30 psi all round for a medium weight 4wd unladen, more in the rear according to load. Done many kms in a Triton with these pressures and got good kms & even wear. Usually use 40psi upwards when heavily laden over rear axle with manufacturer quoting up to 55.

Just fitted my second set of BFG 245/70-16 on the Jack. I have confirmed the following figures as best for me, after looking at the wear as they came off.
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Blacktop....36 front.....40 rear
Gravel ......28 front......32 rear (max speed of 75/80 - and pick a track through those stones !)
Soft sand - 18 front.....24 rear
Most of my travel is blacktop, and if you go lower than 36/40, you'll wear the shoulders earlier than the faces. Hate to be rude to tyre dealers, butsome of themmay know little about outback tyre success.....ask one in the bush I say.