You can convert your height from inches to centimeters by multiplying it by 2. 54. Road bike height charts should not be used as the only resource for sizing a road bike, but are a good starting point for the basic frame size you should be looking for. Some road bike charts are more specific, with up to 6 or 7 categories of bike frame sizes.
The book should be held between your upper thighs, simulating a road bike seat. If you recorded your measurement in inches, convert the measurement to centimeters by multiplying it by 2. 54. You can take this measurement several times and record the average for a more accurate number.
This formula will provide you with a suggested size, but it’s not a guaranteed fit. Double check your math and if you feel that you have made a mistake start over, as this number is essential to sizing a road bike. For example, if your leg inseam is 80 centimeters, your frame size will be approximately 54 centimeters.
This measurement is known as a C-T measurement and is used to identify the frame size.
If you are buying a new road bike, choose a frame that has a seat tube measurement matching your inseam. If you are measuring your current road bike, consider purchasing a new frame if the bike’s seat tube measurement differs from your inseam.
You can also record this distance by measuring from your hip bone to the top of your shoulder with a tape measure.
This equation looks like: [(Torso Length + Arm Span) / 2] + 4 inches (10 cm) = Total Reach
If your top tube length is longer than your total reach, your road bike frame is too big. If your top tube length is shorter than your total reach, try finding a bigger bike frame that fits your measurements. As an alternative to replacing the entire frame if the top tube is the wrong size, you can replace the handlebar stem with one that is longer or shorter, depending on what you need.
Avoid over-tightening the bolt, which could damage the seat post, particularly if it is made of carbon. You should have a slight bend in your knee when pedaling. If there is no bend in your knee when you pedal, your seat is too high. Make adjustments to the seat height until you feel comfortable and have a slight bend in your knee as you ride.
Avoid over-tightening the bolt, which could damage the seat post, particularly if it is made of carbon. You should have a slight bend in your knee when pedaling. If there is no bend in your knee when you pedal, your seat is too high. Make adjustments to the seat height until you feel comfortable and have a slight bend in your knee as you ride.
If a level seat does not feel comfortable, tipping the seat 3 degrees up or down may help your body positioning. You can purchase foam pads for your seat if you find it uncomfortable or hard to ride for long periods of time. [10] X Research source
If your bike has a threadless stem, you might need to tighten the bolts to a certain torque in a specific sequence. If you’re not sure, consult a bike shop. Most riders like having their handlebars at the same height as their saddle. The width of your handlebars should be the similar to the width of your shoulders, so consider purchasing a new set if they do not fit your body.
Be sure to make an appointment by calling the bike shop ahead of time.
