[gabereiser]

As a previous skateboarder, the sweet spot is having full weight on a corner and having about 5mm of space between the wheel and the board. Wheel diameter also plays into the equation. Smaller wheels are used for looser KPT truck setups to reduce the wheel bite mark while increasing the truck turning capability. Risers further this difference. A standard park/street setup is different than, say, a downhill setup or what you find at your local department store. 48-52mm wheels instead of 56-58mm.

Longboards use larger wheels and wider trucks to clear the board of any wheel bite. Some even cut out that area of the board. For skateboarding, you need that area for stability, flip tricks, and landings.

The physics of it all is what’s so awesome about it.