Began autocrossing in 1988 as that was affordable. Tried LOTS of cars in various categories of Stock, Street Prepared, Prepared, & Modified: Austin Mini, Triumph GT6, Volvo 142, VW turbo diesel Rabbit, C4 Corvette, Porsche 924, Mazda Miata R, Mazda RX-7 1st gen, Mazda RX-7 twin turbo 3rd gen, Nissan 300ZX twin turbo, Dodge Omni, Shelby GLHS, Fiat X-1/9, Fiat 124 Spider, Lancia Scorpion, Lancia Beta Volumex, Nissan 240SX turbo, Formula Vee, Mustang R, Lotus Europa, Subaru Justy, Cosworth Vega, Fiat 131/Brava, Dodge Neon, Toyota MR-2 1st gen, Toyota MR-2 2nd gen, & Mitsubishi Eclipse.
Edit: add '70s VW Rabbit w/2 liter motor, '80s Honda Civic w/2 liter motor, Fiat 128, Yugo
With increasing work stress & family needs, the last time I autocrossed was in 2006, in a D Modified Icsunova replica. Eventually found myself getting into the world of 24 Hours of Lemons and Chumpcar. Raced in the inaugural Chumpcar event at PIR in 2009 and a few races in 2010. You have no idea of the work that goes into 24 hour races until you do one!
Edit: did a hillclimb or two
Then I concentrated on achieving early retirement, exiting employment in November 2015, so haven't been a real racecar since then and have been putting knowledge & skills to use in simracing. There's a dozen cars I accumulated for projects, waiting for retirement to have time to work on them, so one day in the near future I'll get back to them...
Race tires experienced: Yokohama RS & RSII, BF Goodrich R1 & successors, Toyo Proxes, Hoosier Autocrosser & radial & cantilever slicks, Goodyear slicks