... length, bearing diameter etc.Commonly: a wheel includes: tyre+tube+rim+bearing=wheel Tires: different tire layer: 2pr/4pr/ ... coated, or zinc platedBearing: ball bearing, roller bearing or nylon/steel bushingDetail refers to spare parts (tire, tube, rim) ... butyl rubber tube,tyre,motorcycle tyre,rubber wheel,solid wheel,solid and crumb wheel,foaming wheel,rubber productsTrade Terms: FOB, CIF, CFRPayment ...