Once upon a time, there was a little wheel. Then along came a very very big wheel. Goldilocks, who is notoriously picky, thought something in the middle might be just right. To help you figure out what's what in wheelworld these days, Alex Rankin took his camera to Eurobike 2012 and got the lowdown from the industry. Whilst there is no single right answer for everybody, some of the industry players are already betting the farm on the larger options, at least when it comes to the all-important "trail bike" segment (and XC of course).