I am loving running in STF this year! hope someone can bring one those Mazda2's to a Chicago or Milwaukee Region SCCA event because sadly I wont be able to run nationals this year, but 2013 I plan to come strong to as many tours as I can. I had a blast at the Championships in Lincoln last year in a borrowed FSP 2.3 Focus (my second time on Hoosiers and driving that car and wasnt DFL)
And to the original post question, I run B'stone RE11's in a 205/45r16 but I am planning on going with the 225/50r16 Star Specs for next year. they seem to take a split second longer to bite, but when they do, seem to bite better than the RE11's i.m.h.o.
#87 STF 2000 Focus Sedan
2013 SCCA National Championship 6th Place Trophy Winner in STF
2013 SCCA National Match Tour Milwaukee STF Winner
2013 SCCA National Match Tour Peru 3rd Trophy
2013, 2012 Chicago Region SCCA STF Season Champion