After 40000Km and 5 trackdays I said goodbye to my stock tires. The reason? Not the ware because they could run perhaps for more 15000-20000Km. I fitted one HKS SC V2 and felt I should improve grip. I fitted Michelin Pilot super sport 215/45 R17 in my stock wheels. Fantastic tires, smoother and quieter ride and lots and lots of grip. Better looking too. The same size of the stock Michelin's but looking larger on the wheels!!