It depends.
If you are going to be using the tape, then you have to put the EXACT right amount of glue on the wheel or when you put the tape on, the glue will spread over the whole wheel and trust me, its not fun getting it back off.
If you slice it, then you can do it all much easier, and if you dont want the finish that slicing it leaves, just slice it, then put the wheels in boiling water, it smooths out the lines.
Thanks.