The idea was to have two wheelsets, one with the 700x35 Nimbus Sport Blackbelts for dirt or gravel, one for the 700x32 Continental Sport Contact slicks. Easy changout. Original Fuji carbon blade fork is fun, too. 170mm crank on the bike, 175mm spare. 'DeFender' front fenders clip on. Street fenders are Portland Design Works. I like their mounting system. Spare front wheel had an accident before it was ever installed on the bike - waiting for a new matching rim to re-lace it.