My 2006 Mazda MX-5 (3rd generation Miata) is prepped for C Street Prepared class autocross competition, where I compete against the smaller & much lighter 1st and 2nd gen Miatas. My drivetrain/suspension mods include AST 5220 coilovers, Hyperco springs, Hotchkis RX-8 front swaybar (no rear bar), full polyurethane bushings, and Mazdaspeed LSD. The engine is producing close to 200 hp and 170 tq (crank). It weighed 2360 at Nats this year, or nearly 400 lbs more than my competition. My best finish was 11th in 2010, although the car does have a National Championship title (Juliann Pokorny won the CSP Ladies class in 2009, in the rain on Day 2, on Hoosier Wets).
As a matter of fact, I've never been to Lincoln NE for a National-level event when it didn't rain! This past May, I was there for a 4-day combined SCCA National Tour & ProSolo, and it rained for the Tour. We finished mid-pack on my street Dunlop Direzza Star Specs, so I vowed to be prepared for rain at Nats.
I bought some insurance for Lincoln and installed a fresh set of the brand new Hoosier Wet H2O racing rain tire (275/35R18 on Enkei RPF1 18x9.5 45ET wheels) just before the 2011 Tire Rack SCCA Solo National Championships. I also had a fresh set of Hoosier A6s for my dry race tires. We were in the first heat, and it had rained all night so there was not just standing water, but small rivers flowing across the course. After 1st runs, we were way ahead of our competition, and stayed on the H2Os as everyone else switched from rain tires to dry and back again, trying to find the edge. On my last run, with drying conditions accentuated by standing puddles, I layed down an astonishing run and finished Day 1 in 1st place, .6 seconds ahead of the field (including multi-time National Champions Matt McCabe, Scott Fraser, and eventual winner Tim Aro). I finished in 4th after Day 2 in the dry, so I give all the credit to the fantastic Hoosier Wet H2O tires for helping me achieve my first Nationals trophy!