I ran my miata in XP but it was not much more than a lightly prepped CSP car with a JRSC. I still had lots more I could do to it just to run well in CSP but the SC bumped me to SM2 and I had the FM underbrace which put me in XP, otherwise it was just a little suspension and brakes. I like to run in higher classes so I don't have to worry about what I do to the car. I autox for fun and development so my class doesn't matter to me. I don't like people complaining about some mod just because of some gray area in the rules. I loved the car on both autox and on a road course. I could keep up with most of the NA elises that would come out because most of the owners don't yet know how to drive one. Once Tripper put the SC on his I couldn't keep up anymore. I sold it and got another bike and I've been doing more on track on 2 wheels and focusing on my development of the other race cars in our group. As for tearing things up at a track day. My Miata would usually run 3-4 events on a set of HP+ Hawk front pads and the rears would last the full year. My BFG street tires lasted 3 events and didn't show much wear when I got a different set of rims for some A048's and only ran the BFG's on the street. Even the A048's would last 5-6 full weekends with some street driving in between. My saturn I run from time to time is completely stock except for a set of General UHP tires and I flog it like a thief in Singapore and it still drives my gear, me, and my friends home every time. All the excuses I hear each time for not going to the track are from those who have never been. Yes you risk crashing your car but if you're remotely smart about it you won't have a problem. The entry fee isn't that much when you look at what some other weekends of fun can cost.