Get the most out of your rides by pairing the Ride with GPS app with Bluetooth-enabled speed and cadence sensors. Once the sensor is paired, simply input the circumference value of your wheel and tire size, which can be found in the table below.
Note: If you are unsure about your wheel or tire sizing, diameter, width and ISO should be notated on your tire’s sidewall.
Wheel Circumference Chart
| Size | ISO | Circumference (mm) |
|---|---|---|
| 700×23 | 23-622 | 2097 |
| 700×25 | 25-622 | 2105 |
| 700×28 | 28-622 | 2136 |
| 700×32 | 32-622 | 2155 |
| 700×35 | 35-622 | 2168 |
| 700×38 | 38-622 | 2180 |
| 700×44 | 44-622 | 2224 |
| 700×50 | 50-622 | 2293 |
| 700×56 | 56-622 | 2325 |
| 27×1 3/8 | 35-630 | 2169 |
| 27×1 1/4 | 32-630 | 2161 |
| 27×1 1/8 | 28-630 | 2155 |
| 27×1 | 25-630 | 2145 |
| 26×1.25 | 32-559 | 1953 |
| 26×1.5 | 38-559 | 1985 |
| 26×1.9 | 47-559 | 2055 |
| 26×2.125 | 54-559 | 2070 |
| 29×2.1 | 54-622 | 2288 |
| 29×2.2 | 56-622 | 2298 |
| 29×2.3 | 60-622 | 2326 |
| 650b x 38 | 38-584 | 1995 |
| 650b x 42 | 42-584 | 2100 |
With your wheel circumference value determined, your paired Bluetooth sensors will be able to transmit speed and distance data to the Ride with GPS app. Learn more about pairing your Bluetooth sensors with the Ride with GPS mobile app to ride and train more efficiently with accurate, reliable smart data from power meters, heart rate monitors, speed and cadence sensors.
Looking to get more out of your metrics? Upgrade to Ride with GPS Premium to unlock powerful ride analysis tools to help you train smarter.
For more information and background on calculating wheel circumference and calibrating your bike computer settings, be sure to check out Sheldon Brown’s Calibration page.
Any other questions, send us an email at info@ridewithgps.com.
