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.
Computers, GPS and watches are all fantastic training companions to hit the road and trails with. A GPS unit provides you with guided navigation and this is invaluable when you are riding or running in new locations. A Cycle computer allows you to review your training performance by recording all of your ride data such as speed and distance.
It’s important to buy a device that is right for you and your training needs. If you don’t require any guided navigation then a cycle computer without GPS shall suffice. If you want the benefits of a cycle computer with guided navigation, then a cycle GPS like a Garmin Edge is the best bet. Please consult the buying guide to learn more about the various types of cycle GPS.