Woohoo. Purple crack 225/45/13 R6's are on clearance. $125 USD per tire.
I ordered 8 of them.
Gonna pick them up on my way down to Kent for the Sept 4 VCMC track day.
https://www.hoosiertire.com/discontinuedtires.htm
They have other sizes, but not in 15's. R6's are the track compound and A6's are the autoX compound.