Wow - good research!! I must say I thought 22 at the rear a bit low - but then the 4/4 seems a v well balanced car.
But thanks Peter for that authoritative info!
Peter. Very interesting. After trial and error over nearly 10 years of ownership of my 4/4 I run at 20 front and rear, with 22 at the back when loaded. The tyre size is 165 . 80 . 15. My handbook recommends (18 psi front and rear).