... tire: For 12" wheel, the tire size is 2.125; For 16" wheel, normally we send size of 2 ... .125, but we also have size 2.5, so if ... tire, but we also have size 2.125, if you need size 2.125, please specify it to us; For 28 ... fit your e-bike. Motor Performance: 48V350WDimention520mm*380mm*190mmWheel2.125-16,2.5-16Brake systemFront/Rear disc(drum)/drum brakeColorBlack ...