For Autocrossing with my 78 mini how much tire pressure should I run. I have 165/10 Yokohama AO32s

 

That's a tricky one, Your car is SO light, I'd guess 34-36 lb range and adjust with a pyrometer's (probe style not IR) help.

These newer cars use much higher pressures, but they have more mass to deal with. It also helps to have a friend that can take the tire probe temperatures - you'll be loosing heat pretty quickly.

I think you'll also want to make the adjustments based on sidewall flex - I am thinking lower pressures to aid in the build up of heat.

Alex

 

That's what I did. Put shoe polish on the tires so I could see where it wore off. Ended up at 21 lbs pressure.

 

A friend with an adult kart is in the 11-14 lb range. Of course the kart weighs more, and has larger wheels...