Just puntured my tyre with a spanner while travelling back home after midnight... Then stopped at outram cos no more air left... Then wanted to change tyre but stock spanner provided cannot fit into my rim... Then called my dad and he brought the tools down and i fitted the spare tyre... Thank God he never lose his way and he came very fast... Then got a discount from hankook's boss for getting the R-S2... Able to withstand 300km/h... consider semi slick i think... Thank God for new tyres... =)