The BFG Rivals (non-S) on my autocross/track day Miata that I bought at the start of last season are almost done. I really should be getting some new tires, but I'd like to see the results of this test first if possible. I know the RE-71 and Rival-S are stupid fast at auto-X but I don't want to spend $500 on a set only to find out that I'll ruin them the first time I go to the track.
