The Nebulizer:Most of the posts I have read point to limitations of the stock e46 M3 (camber, weight/springs, thin front wheels/understeer) that keep it from being more than modestly competitive in AS. I have little knowledge of who is driving them though. But, given that the M3 is a popular car on the track, I would think if it was capable of being competitive it would be used more frequently in AS. I know of one competitive driver that gave it a shot but switched to the S2000. It just seems hard to believe a sports car like the M3 would not have had significant attempts made to be competitive in AS - its not like it is an odd car or one driven commonly by non-racer types. If you own an M3, it is your duty to do some sort of competitive driving.
The limited camber, weight, and narrow front wheels all raise doubts, and it is expensive to pioneer a new car even in stock class. And it's an expensive car to take a risk on unless you just happen to own one anyway. I think that is why people have not really gone for it. I heard that when it was originally classed, Tunnell was going to set one up, but obviously he got distracted by Street Mod. Josh Sirota spent a year preparing to run nationals in his car, but when the motor died that ended that plan. Now he's off road racing. There's a guy in San Diego who has one and is pretty quick. He took 2nd place at the San Diego Tour 3 years ago on stock shocks and 245 tires on all four wheels. That's not bad!
Unfortunately in this part of the country, the E46 M3 is mainly bought as a status car. There might have been more M3s sold than regular 3 series in northern California. I occasionally see them at autocrosses, new guys who run a few events on street tires and disappear. I would guess that only slightly more people buy M3s with motorsports in mind than buy Hummers with off-roading in mind.
John S.
S2000 #42as