The circumference of a bike wheel is defined as the distance around the outside of the wheel. This distance includes the additional width that a tire brings to the wheel. (The circumference is mostly mentioned on the wheel. If not, you have to measure it manually.)

To get accurate results from a Speed Sensor, input your wheel CIRCUMFERENCE only if you use
a Classic Trainer - it returns the speed, and the speed is correct only when the CIRCUMFERENCE is set correctly.

A Smart Trainer, Smart Bike, or Power Meter immediately returns Watts, and there is no need for a CIRCUMFERENCE input.

Here is how you select the circumference of your bike wheel:

  • Open the ROUVY App
  • Click the CONNECT SENSORS button in the left top corner
  • Choose the CLASSIC TRAINER option
  • Click the green ADD TRAINER button
  • Select the brand and type of your trainer
  • Click the WHEEL SIZE option
  • Select your WHEEL SIZE
  • Click the CONTINUE button 





That's it! Your wheel size is set up. All that remains is to connect the Speed Sensor and enjoy a ride.  


For more help, please feel free to contact us.

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