Knowing your height without shoes is a key in finding the right fit for your bicycle. There are bicycling sizing charts at stores and on the Internet to help narrow your choices in searching for a new bike. However, if you're buying a bike for a child, it's also important to take their age into account. If you're an adult, you want to measure your inseam to find a bike that gives you a comfortable ride.
Measurement
Before you start your search for a new bike, gather a few measurements to help narrow your choices. Take note of your height in inches and then measure your inseam. It's not the same as the size you buy in jeans. You need to put a hardcover book between your legs, as if you were sitting on a bike seat, and find someone to measure the length from the top of the book's spine to the floor.
Wheel Size
Very young children who measure 26 to 38 inches in height are best starting out on a bike with a wheel size of 10 or 12 inches. As they grow from 4 to 8 years old and reach a height up to 38 inches, move them into a bike with a wheel size of 16 inches. Kids ages 6 to 12 who are 48 to 60 inches tall can graduate to a bike with 20-inch wheels. Teens and adults who are 52 inches or taller and like riding BMX/freestyle bikes may want a 20-inch wheel. People in the 52-to-60-inch range who prefer mountain and comfort bikes may like a wheel size of 24 inches. Those 62 inches or taller may opt for a 26-inch wheel.
Frame Size
If you're in the market for a comfort bike, you may find sizes listed as small, medium, large and extra large. A small can fit someone in the 63-to-66-inch range with an inseam measuring 27 to 29 inches. Those who are 66 to 70 inches may be most comfortable on a bike with a medium frame. At 70 to 73 inches in height, consider a large frame. Those who are 73 inches or more with a 34- to 37-inch inseam can opt for an extra large. Sizing charts are available for other styles of bikes based on inseam length.
Other Considerations
Consider jotting down a few more measurements. For a perfect fit, it also helps to know the length of your torso and arms. Use these to determine the perfect top-tube length. Once you're on your new bike, continue custom fitting by adjusting the tilt of the seat and its height. Your leg should be almost straight when it extends while pedaling.
Member Comments