I have 6 Michelin Pilot CS full race slicks all of them are 275/40 17. One of them says "CLUB SLICK" instead of CS. Most are reading 4/32nds a couple at 5/32nds. These started life as full slicks (read: not DOT legal), they say "for racing purposes only" on them. Pics at
www.lemcomotorsports.com/Slicks or email me matt at lemcomotorsports dot com. Asking $400 for all 6, local pick up preferred, yada yada.