Originally Posted by clarence
No u don't. HK-spec M-sport comes with 2NH as standard. 2NH discs are straight swap with M-performance discs.
In any case, if u swap them the only gain u'll get is better looks - u'll have no performance gain at all as the sizes are the same. Also those discs are not really drilled, only slotted & dimpled.
can the 370x30 (Part number: 34106797603) be fitted with the standard M-sport caliper? or 345x24 (Part Number: 34206797600)?