I run 24 front 26 rear approx. on the road. Adding some 6 - 8 psi on track (except Autosolos where I only raise the fronts to lighten the steering).
22 psi is too low for my 130kg... smile And my driving style.

Graham (G4FUJ)

Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW