Originally posted by InitialD
Ummm, I've always debated this with myself. But you've already noticed by now that rubber tires overheat.
Possibly this won't help you, but it may be worth a try. If you drill holes through the rims at the 12, 3, 6 and 9 O'Clock positions this will help prevent the tyres from overheating. Obviously drill the holes before mounting the tyres

and use a 3mm drill bit.