Balance

Balancing tyres is important

Checing balance

Put bike on rear stand, and spin up wheel. Do not over spin, check speedo, keep it around max of 100km.

Watch the vibration over the bike.

See Also

https://www.youtube.com/watch?v=omh9kbEcb-M - Balancing an Electric Hub Motor
https://www.youtube.com/watch?v=8Fki-ZHvRGo - How to Balance your E-Scooter Motor to Reduce Motor Vibrations
https://www.youtube.com/watch?v=5sdgS_QhaMM - Precision Balancing any scooter wheel