hi ,ive just dug out my old ae rc12L3 just for laughs and ive forgotten all about foam tyres,whats a good starting point tyre on a permanent tight technical track,i havent raced it for 10yrs so its still set up from the last time it was used so its just what shore ratings to go with,i cant lower the car too much to run the very low profile tyres so ideally donuts is what i need,i have wheels here,contact seem to be easy to get hold of for me