MAXXTRAC (tm) World Class Silicone Rear Slicks (PAIR) for NSR Renault Clio / Fiat Abarth / Porsche 997 / Corvette C6R / Audi R8 / Audi R18,  BMW Z4, Racer Sideways Porsche 935/78 "Moby Dick" & Slot.it Lancia LC2/85 / Porsche 911 GT1 / Lola B09/60 LMP / Lola B10/60 / Audi R18 TDI / Nissan R390 GT1 / McLaren F-1 GTR / Ferrari F40 / Toyota 88C / Porsche 962 IMSA / Jaguar XJR6 - Rounded tire sidewalls for realistic tire appearance and Part Number markings on the rear face of each tire - Super tough abrasion resistant rubber (suitable for Ninco and all other track surfaces)