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I bought a 97 gsxr-600 track bike from a member here at the end of last season and it came with some Pirelli DOT race tires (I cant remember exact type right now). The tires are pretty worn on the edges but are still showing decent tread down the middle of the tire. I just moved up to yellow last year (TTD) so i am a slow yellow group rider. Is there a way to know if these tires are still good for my trackdays this year. I don't want to have to be suprised at a track day if they dont pass tech. Any help would be appreciated.