Hmm, think I’ve been daft, with this question (in my defence I’ve been feeling crap/knackered/stupider than usual all day :lol:). Scrap the bit about the size of the rotor then but there still seems to be two types, disc and non disc ones available, must be to do with the caliper I suppose.
Worried too that the weight of a DH bike (proper heavy few year old one, definitely a strength over lightness bike) will be too much on a rack too.
It does fit in the car with the front wheel off but as it gets so muddy the car is filthy today. Tow bar would be nice but other things to spend cash on before that comes round. Same applies to the van!