I have a couple of 215 40/17s - I believe they are Potenza's - taken off an 05 NSX, inside if each tire (last bit of tread) is worn but the rest of the tire is mint (had 10k mi on them). $40 for both obo if interested.
Currently: 2002 C5 Z06, 2009 335i, 2012 M796, 1976 XS650
PM me for your sidewinder (laser cut) key blank and cutting needs. Have OEM pre-ews keys and replacement shells. Can do (almost) all BMWs up to 2008!