並前往https://wheel-size.cn/calc/?wheel1=245-30-20X8.5ET45&wheel2=305-30-20X11ET45&fcl=50mm&wcl=30mm&scl=50mm&sr=0mm&fbclid=IwAR3wIxHQB7S4ER6wPzvJSmcUcqpfSIOvu3Um1KnQRB1FnOK6IvNK5geDh-8