60mm 79a skateboard wheels here. I go over gravel all the time. Sometimes even loose dirt paths. Patchy asphalt. Cobblestones and brick. Momentum is your friend

60mm 79a skateboard wheels here. I go over gravel all the time. Sometimes even loose dirt paths. Patchy asphalt. Cobblestones and brick. Momentum is your friend here as well, faster you go more likely the board chucks out the obstruction. It takes quite a stone to stop these wheels, probably one that would pinch flat my bike inner tube and certainly one that would be very hard to miss unless I was not paying attention. I'm comfortable enough with the small rock situation to even eat breakfast or lunch on occasion while on the board.