tyre pressures and compressors

John depending on the load on you truck , on corrugations as in the cape we start at about 24 front and 30 rear see how that goes. then you can go lower if needed.In soft sand you can go down as low as 12 front and 18 rear but take it easy.
As I said it depends on load.
AS for a compressers there are many brands we like the Blue tongue.
All the best
EricCape York Connections

On soft sand fully loaded ive been down to 8psi but i was competing with an incoming tide and was starting to worry a bit.Also i drove slowly with no sharp cornering so as not to roll the tyre off the bead and pumped them back up to 15psi as soon as possible. I own a blue tongue(approx $450) and reckon it was worth it. Consider it insurance against ruining your tyres due to under inflation. With this compressor can pump 4 tyres from 15 to 35 psi in less than 10 mins. Good luck.

I use a Big Red .. $300 and am happy with it , it seems quicker than others who pump their tyres up at the same time but a few minutes in the bush is neither here not there !! ( and drive it off the auxilliary battery)

Depends on the load John, I find 20psi cold good for corrigations & 15psi was fine on the loose sand of the French line,but I don't carry much weight.
zerro punctures in the last 300,000km,lower preasures work.

Between 15 & 20psi will get through most soft sand, any lower with load you run the risk of rolling the tyre off the rim,
We have an ARB $340 does the job no problems.

John
The maximum pressure you can use will depend on the pressure rating of your tyre. The maximum pressure should be marked on the sidewall.

Fat tyres have lower rated pressures than thin tyres (all other dimensions being the same) because they are inherently weaker.

For all tyres the maximum pressure is recommended if required to carry the tyre's full rated load and/ or at high speed.

In off-road conditions the tyre will again carry more load at the higher pressures so you should run at the highest pressure consistent with vehicle loading, speed and not getting bogged in soft sand.

At lower pressure the tyre flexes more and may generate more heat even on flat roads which could damage the tyre more compared with higher pressure.

If pressures are lower than the manufacturer's recommendation (due to road coditions) then reduce speed until you can return to normal pressures.

Sometimes it is unavoidable to run at lower pressures (soft sand). Return to normal pressures as soon as possible afterwards.

Don't be fooled by the smoother ride you'll get at lower pressures over corrugations. This can makes the tyres do a lot more work. Better to let the suspension do the work after all that's what it's designed for.

Fully loaded on outback roads and highways, I run at 40psi Front and 50 psi Back on my 7.5R16 split rims (skinnies). Last trip was Brisbane to Kimberleys and return - 10,000 km on bitumen, dirt and corrugations - no problems.

Happy trails.