i'm steadily going through old tires that i had sitting up since 17.5 was switched to spec and i just wanted to give a personal on how tires performed in mod 12th...

magenta rear/black fronts - phenomenally consistent

yellow rear/black fronts - ok (after about 2 minutes the rears start to give out no matter how long i let the sauce sit)

i dont remember what other old tires i have to get rid of but i'll update JUST IN CASE anyone is curious