Bicycle wheels come in a wide range of sizes from 12" wheels found on smaller Kids Bikes to larger 29" Mountain Bike and 700c Road Bike wheels. Larger wheels are normally faster and more stable at speed and their larger contact patch improves grip too. Smaller wheels are normally lighter, more manoeuvrable and have quicker acceleration.
Wheel sizes are defined by the country that first popularised the style of bike that used them - so you'll see some imperial and some metric measurements listed. Wiggle includes the ISO standard in brackets after each for ease of comparison.
Vittoria Industries Ltd. with an annual production of more than five million tires (mainly for race bikes) and nine hundred thousand famous tubulars all developed and produced in its wholly owned factory Lion Tyres in Thailand, is one of the largest race bike tire specialists and producers in the world. Its mission is to create higher value for its stakeholders and offer high quality tyres with the best available technologies to professional riders and bicycle enthusiasts.
More than 15 professional teams (Pro Tour and Continental), several National Cycle Federations and the UCI Technical Centre in Aigle (CH) have used Vittoria tires for their races and training programs for many years.