Thread: Tyre Inflation

Morn'in Hucksta!

those the OME's?
I found the original Michys got really hard (as opposed to just hard )
as they got near end of life


have run 36 all-round for,, gees,,, 11 years now,,
first set of BFG's got over 100,000

but it is REALLY subjective,,, all depends on how YOU feel the car behaves,,

Given that I have a similar disco - I can say the following:

a) The rating on the tyres is the max load you can put on the tyres.
b) The tyre placard indeed says more in the rear than the front when using 205/80r16 tyres, even unladen.
c) I run 36/32 in 245/70r16 tyres, and it seems ok to me. But I have removed my sway bars and steering damper, so I expect it to bounce around a bit.
d) Go with what you know.

Try both settings and do a lap of somewhere with some twists and turns. Adding bullbars and other stuff alters the distribution of weight through the wheels, so the factory settings may not be satisfactory now. Generally having 4psi extra in the front tyres aids steering on the street.

if youve got bar work, a winch and you carrry a bit of stuff (what I call my empty weight was always 200kg over the normal empty weight) then you can up the tyre pressures a little.

if you drive slower you can lower them a little.

excluding the series Ive almost always run 32/42 front rear at my empty weights and anything upto 42/60 at a full load.

its a variable thing play with your tyre pressures one set at a time in about 4 psi intervals till you find what you like then experiment with 2psi either side till you dial it in.

Originally Posted by langy

Given that I have a similar disco - I can say the following:

a) The rating on the tyres is the max load you can put on the tyres.
b) The tyre placard indeed says more in the rear than the front when using 205/80r16 tyres, even unladen.
c) I run 36/32 in 245/70r16 tyres, and it seems ok to me. But I have removed my sway bars and steering damper, so I expect it to bounce around a bit.
d) Go with what you know.

Try both settings and do a lap of somewhere with some twists and turns. Adding bullbars and other stuff alters the distribution of weight through the wheels, so the factory settings may not be satisfactory now. Generally having 4psi extra in the front tyres aids steering on the street.

Swaybars I can understand but mine drove like crap witout the steering damper

I run 35 F/42 R on my Disco, I used to run 36 all round and I found it got a bit soft into corners in the rear so I bumped it up a bit in the back and I found that it seemed to drive ok with 35 in the front accidently due to an uncalibrated tyre guage.

And also look at the way the tyres are wearing, the old general rules about wearing in the middle (to high) or wearing on the edges (to soft) still apply to 4x4's.

Originally Posted by mcrover

Swaybars I can understand but mine drove like crap witout the steering damper

I run 35 F/42 R on my Disco, I used to run 36 all round and I found it got a bit soft into corners in the rear so I bumped it up a bit in the back and I found that it seemed to drive ok with 35 in the front accidently due to an uncalibrated tyre guage.

It drove like crap without your damper because, the CASTOR is out and the damper helps mask it, car should drive exactly the same down the road without a damper

That was before the lift but I did find I also had a bent rim and it used to get the wobbles up in the steering at around 80kmh.

one of those "how long is a piece of string" questions.

I run 245/75 R16 and find on blacktop mid to high 30's front and back is best for ride and fuel economy.....

if it's gonna be all gravel I'll drop em down to 30 - 32 for more comfy ride

offroad ... depends on the terrain and conditions, but somewhere between 20-30, genrally around 25

....everyone will have different set of favourite settings though...only comes with experience with your own vehicle