DIN 7816-3
DIN 7816-3 Rims for motorcycles; part 3: 5° tapered drop centre rims, rim profile 2.50 A and 2.50 C
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/1994
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/1994