English Markings
Please see the table below to determine your Swytch Wheel size from English markings:
French Markings
Please see the table below to determine your Swytch Wheel size from French markings:
Unable to Match Markings
If you are unable to match the markings with a Swytch Wheel size, you can measure the wheel size yourself:
1) Place the tape from the centre of the wheel to the tyre's inner edge where it meets with the rim. Take down this measurement in mm. This is the inner radius of the tyre (R). [E.g. 317mm]
2) Multiple R by 2. You now have the diameter of the rim. [E.g. 317*2 = 634mm]
3) Subtract 10mm from the diameter. [E.g. 634-10 = 624mm]
4) Match your measurement with the Swytch Wheel size table above, it should come within ±3mm [E.g. 624mm = 622 Swytch Wheel]
A marking on the side of the tyre is a more accurate and easier way of finding out your wheel size and should be used whenever possible.
Not Sure? Contact Us
If you are unsure you can open a support ticket here: https://swytchbike.zendesk.com/hc/en-gb/requests/new
Haven't Registered Yet?
If you are interested in placing a pre-order and aren't already on the waitlist, make sure to register to here: https://www.swytchbike.com/p/universal-ebike-conversion-kit/