No offense but I wouldn't call any metal core but the 3 spoke wheels "designs." I can render the wheels in PS to look more realistic I think the best one is the one that I copied from dissidence you can't not like that wheel.
You cant really have an off balance scooter wheel, its too small. The hole doesn't go to the urethane, there's still 2mm of metal between the the urethane and the slot. It was just a chic style wheel.