Or size 54 (road/gravel bikes), M (general), S3 (MTB)
Is 47-622 a 28 or 29" wheel? (It is why ETRTO leaves no doubt)
It is because a long time ago Airbus realized the only way to conquer the U.S. market would be setting the distance to nautical miles, speed to knots, altitude to feet, vertical speed to fpm. Now, the pressure is hPa worldwide except the U.S. where it is inches mercury. The most radical change was measuring the amount of fuel in kilograms worldwide in the aviation. Please read or watch the "Gimli Glider" history: a very interesting case on mismatching kilograms with pounds. The U.S. commercial aviation regulator has written "Eventually, all aviation measurement units must become metric" but no date was ever given.
Both units are used (in parallel).
Please indicate the BSA thread in your Haibike

Not sure how your motor is made by my crankarms are tightened or loosened with an 8 mm hex key
Not in my country. We have McRoyal or WieśMac (Countryside Mac)

Is the British McD colour scheme still red or is it green (as in Europe?)
View attachment 192736
A Countryside Mac of Poland
No pickles!