I compteted in our local SCCA autocross yesterday in the STS class and I managed to take a whopping last place. (Oh well) Anyway, after reviewing the classes, I'm not sure what class I should be running. I have 1998 Civic with I/H/E springs/shocks and +1 wheels/tires. I got KILLED in STS but noticed that SM (street mod) times were slower than STS. Then I noticed the street tire front-wheel-drive category. What is the difference between the three?