Thread: on road tyre pressure for Cooper ST Maxx.

Originally Posted by Steve223

hello Together,

just wondering what you guy's run on road with
the ST Maxx
Cheers

Steve

what your tyre placard says.
the placard is based upon the weight of the car, not the tyres its running.

ok great but placard only goes to 255 I have 265 does that make a difference?

Originally Posted by Steve223

ok great but placard only goes to 255 I have 265 does that make a difference?

very small.

trial and error.

try 36psi (for example) if you dont like it, try 37 or 35.

I run 36psi Front, 38psi Rear, got to this through trial and error, if I'm towing I go to 38psi Front, 44psi Rear.

Only takes a couple of trips to get it right, well it did for me, I use the tyre placard as a starting point, then go up or down from there.

Baz.

I run 38 front and because they bulge out a bit at the back I run 40 in the rear.

I have same ST Maxx Steve (265/70/17) and use the '4 psi' rule (ie tyre should increase about 4 psi from cold to normal running temp although I gather with LT tyres 6 psi is Ok). Following lots of trial and error -around town unloaded I only need 32 psi front and 35 psi rear. When towing camper I use 36psi front and 38-40psi rear depending on load. I take into account these tyres are very heavy duty compared with OEM 19" Goodyear which I have on at present-I use the tyre placard guide of 33F/36R for them. Regards,David

Originally Posted by Steve223

hello Together,

just wondering what you guy's run on road with
the ST Maxx
Cheers

Steve

Just to get a little off track...

Steve, what are the ST Maxx like on and off road on the Disco?

Cheers,
Ben

Originally Posted by Redback

Only takes a couple of trips to get it right....

What things do you take into account to know when you get it right?