[dangermouse]

Hi Christian we run our plafit cars with foam tyres Plafit make their own but generally you need to glue and true your self, for most of my builds I use the Scaleauto wheels and tires they come pre glued and trued. For the GT40 I would say 21mm wheels. If you haven't done so already have a look in the 124 section Christer has some excellent builds of 1:24 cars including a GT40
Cheers David