how can you remove the drive wheels?
1. Remove the Tiger tracks
http://www.rctankwarfare.co.uk/forums/v ... 18&t=11460

Use a small screwdriver to lift the center lid.


The shape of screws can vary.
Unscrew it and pull of the wheel.



Reassembling works the other way round.
PS:
If you have a version with a crossed-head screw, please replace them with similar hexagon socket screws. Those are easier to change and the heads last longer. The crossed-head ones easier make problems with the crossed slit by use it to often. If the crossed-head is damaged, it is almost impossible to unscrew it.
Greetings
Birger
For a lot more help with your Heng Long Tiger I tank, follow the below link ...
http://www.rctankwarfare.co.uk/forums/v ... 18&t=11459