Originally Posted by BiscottiGelato
I thought the M3 Competition/Z4M rotors are 2 piece floating w/ aluminum hat? Only issue I see with them are cross drilling being possiby less reliable?
Having just removed my OEM 135i BMW performance cross drilled front rotors due to pretty severe cracking across the holes, I can vouch for the lack of reliability. Car was tracked a few times, but I'd only used just over half of the original pads before I noticed the cracking.
I never touch the brakes on any of the cool down laps to try and prevent this too.
Driving - Man 135 (LeMans/Black). BMW Perf SW, Quaife LSD, KW V2s, Ground Control camber plates, M3 front Control Arms & SB, Helix IC, AR DPs, PROcede V5, ER CP, Forge DVs, BMS OCC, Setrab OC, P3 Gauge, Alcon 6 Piston Calipers, DBA 365mm 2 piece rotors.
Riding - ZX14R Kwaka, Merida Scultura 7000E, Avanti Aggressor, Malvern Star Equipe, Mini Mal.
Proudly from the Shire.