their where 2 types of calliper that fitted the z4m, the cp5575 and the cp5555, the cp5575 which is the one AP would ship for the z4m, is the same as the cp5555 ( sent out in the e46 m3 kit) but basically takes a pad that is 1mm thinner, 17mm vs 18mm, the cp5575/cp5555 offers no difference in external look or performance, just better wheel clearance as its basically a slightly thinner calliper , pad choice is also the same.
on the wheels i prefer the ec7, better brake clearance, looks better and the offsets are better for the z4m imo... What ever the wheel you don't want one that offers like 2mm of calliper clearance imo.... AP calls for a minimum of 4 mm between the wheel drum / or the spoke.
on the wheels i prefer the ec7, better brake clearance, looks better and the offsets are better for the z4m imo... What ever the wheel you don't want one that offers like 2mm of calliper clearance imo.... AP calls for a minimum of 4 mm between the wheel drum / or the spoke.
