2 pairs: Pirelli Supercorsas, 120/70-17 & 180/55-17 off a 600, DOT treaded tyre, SC1 Fr & SC2 Rr. They are my ex-race tyres, but they were removed prematurely in hindsight. 2 pairs. approx 50% on the edges and 75-80% through the middle. Construction in mid 2010 from memory. 1 pair: Bridgestone 003 RS, 110/70-17 150/60-17 off a 125. treaded tyre, construction late 2010/early 2011. Ex-race tyres from an underpowered 125, so no wear, ha ha. Maybe 80% sides and 90% down the middle worst case. Somebody please take them away, try out a soft & sticky tyre, pass a safety certificate, go to the drags, put on spare wheel for burnouts, whatever you like.