slicks

looking in to some slick tyres for track use runing 205 40 17 at the min on 7j am i right in thinking that i shoud be looking at 200/640/17 will fit :shrug:

anyone know this guy?? if he turns up this week in his car to work he'll have the coppers there to greet him telford pc world, if he is on here just point him in the direction of some new tyres??!! the day i saw this effort at racing slicks i was sliding myself in my car with legal...