Off Road Tyre Pressures (was Kookynet...)

**vnx205** · 28th September 2007, 05:47 PM

It's a bit hard to draw firm conclusions from the amount of experience that most of us are able to gather by ourselves. Everyone knows that retreads are not a good idea in the NT, yet when I did the Oodnadatta Track, the Tanami, the GRR and the Suart Hway in 1999 in the Series III with crossply retreads, I had no problems. I ran 28psi front and back because that is what I always ran. Maybe sitting on 80- 90kph helps.
Maybe the age of the tyre is another factor that needs to be considered when looking at who had tyre failures and who didn't.
My brother in a Ford Patrick had a couple of new tyres on rims ready to fit when he got the last bit of life out of the rears which were legal, but obviously well used.
I think he managed about 5km on the GRR before one old rear was destroyed. He had no further problems after fitting the new rears.

I doubt that the Pink Roadhouse would be looking to give bad advice about pressures. I think that even with modern equipment fitting tyres would be a bit of a PITA. I think they would rather be doing other (possibly more lucrative) things with their time.

**camel_landy** · 28th September 2007, 06:25 PM

Originally Posted by Slunnie

Here is something interesting from Cape York, which didn't appear to be overloaded.

Look at the tyres,
Look at the tyre pressures,
Look at the axle!

IMHO, if you're driving offroad, drop the pressures.

Yeeeessss..... But what that photo doesn't show is how the car was loaded & what mods were done to the vehicle.

Was it a car, kept stock standard and only loaded up to the design limits? Or was it running with stiffer springs, poly bushes and loaded to the roof with camping gear??

The only time I've heard of a failure like that was when the army were trialing the early WOLF 110s. That's why the WOLF rear axles have that strengthening brace on the bottom.

M

**Slunnie** · 28th September 2007, 10:32 PM

Thats true.

It all looked pretty standard to me, if anything a 2" lift tops but I'm pretty sure it didn't. Someone may be able to tell by the angle of the lower wishbones. The vehicle wasn't heavily loaded at all, nothing at window height from what I recall. No roof rack. No idea what bushes etc though I doubt a bush will break an axle.

Oh well, you can add the Pajero to the wolf 110's now.

**PhilipA** · 29th September 2007, 08:10 AM

This is failure of the weld from the axle tube into the diff.
Possible causes?
Tube not fully pressed in.
Jumping at some stage. Could have been old damage from someone demoing flying properties on sandhills.
Many types of damage do not happen when they fail but somewhere in the deep dark past.
" Gee wasn't I lucky to get away with that!"
Regards Philip A

Thread: Off Road Tyre Pressures (was Kookynet...)

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