The M24's off-road wheels are of good quality and elasticity, and you can use them for a long time.
If you want to change wheels of M24 or M20 electric skateboard, just need take off the screw open the protective cover, then you can take off the wheels.
It is an assembled wheels.
Taking off the screw and open the protective cover.
Then you can change it.
Be careful not to break the screws, otherwise you need to replace them with new ones.
When you have finished changing the wheels, be sure to tighten the screws!!!