Random, utterly useless tidbit: After trying this past season every weekend to find the perfect tire pressure combination for autocross bliss in a MINI, I found it in my last 4 events, pretty much by accident.
IF you have a MINI Cooper, Sports Suspension, and 15" tires running 205/50R15 Kumho Victoracers, run the rear tires 4psi HIGHER than the fronts, and the car will turn-in marvelously.
If the event is warm to hot (that is, above 50 degrees), run the tires at 44f/47r, adjusting the rears up or down in increments to increase or decrease rotation.
That’s pretty much it. There’s nothing quite like barrelling towards a hairpin, easing off the throttle in your MINI and feeling the front end tuck-in and the rear take a set that scoots your right around it. Good stuff!