什么叫r50 r55 r60 r65

是mini车型的代号 2010 - 迷你MINI COUNTRYMAN (R60) 2009 - 迷你R57 2-door convertible 2007 - 迷你MINI Convertible (R57) 2007 - 迷你MINI CLUBMAN (R55) 2007 - 迷你R56 3-door hatchback 2006 - 迷你MINI (R56) 2004 - 迷你MINI Convertible (R52) 2001 - 迷你MINI (R50, R53) 2001 - 2006迷你R50 3-door hatchback 2001 - 2006迷你R53 3-door hatchback 1987 - 迷你MINI-MOKE 还有就是轮胎的型号:固铂轮胎215/225/235/245/255/265R50R55R60R65RR75r16R17R18R19