|SIZE (INCH/ETRTO)||20 x 2.125 / 57 – 406 mm|
OddWheel – Info:
ETRTO: Tyre width – Tyre inside diameter (e.g. 57 – 406mm)
INCH: Tyre outside diameter x Tyre width (e.g. 20″ x 2.5″)
If the tyre pressure is kept high unicycles are not prone to punctures. Snake bites are common if the unicycle is ridden with the pressure too low. Blow-outs are common with worn tyres. It is always useful to have a spare available. Schrader valves which are of higher quality and are more appropriate due to their ability to withstand high pressure than Presta valves.