anyone had any experience with this tyre? they do a wide range of sizes for a 13" rim

It's an excellent tyre, but you're somewhat limited on tyre size on 13 inch wheels.

they are mega, did 4 seasons on them sprints/hillclimbs (3 sets total), in the super soft compund they are by far the best 'road legal' List 1B rubber out there (ive used Yoko 32Rs and Avon ACB10s too).
no experience of running them on the road though, other than that the softest compound wouldnt be any use on the road, 3 laps of castle combe giving it the biggun and they start to overheat, but for sprints/hills are superb.
they have verty little tread depth so dont shift lots of water though, although they can be 'cut' to dispel a bit more, your race regs permitting. Cutting is illegal for road use though
HTH
CNH

[Edited on 5/3/10 by CNHSS1]

weigh simiklar to R888s and Yokos, Avon ACB10s are much lighter