OK, bought another set of these wheels as the firstset have been brilliant and CRC had 39% off!!
Question is after suffering the theft of my Cotic BFe and getting a Piglet which snapped and then getting another Cotic BFe I'm in the market for a fork (I'm getting there!!!) Can these wheels be converted from 20mm to 15mm? It'd open up a whole load of other forks for me...

Shimano XT Wheels All Mountain M776 | Buy Online | ChainReactionCycles.com