fs is a set of bridgestone potenzas from an S2000. brand new, the tread depth is 10/32nds on all. these have 10/32nds on both backs (225/50r16) and 7/32nds on fronts(205/55r16). im letting them go for cheap. all 4 for 150$. cant even buy two for that. lmk. dpending on location, i can deliver.