whats the specific reason for using ECB over oem? ive had mediocre experience with ECB in the past on my bimmers.
From what I read online it seems the OEM pads and rotors are not very durable. Lots of people change pads and rotors with under 20K miles. Some are able to get into the 30K's but based on cost and durability you can save a lot of money and get the green pads or step up to yellow or orange. My EBC rotors had very little wear after 30k miles compared to the OE and I was able to continue using them with my second set of pads. I think the OEM pads are optimized to reduce brake dust perhaps at the cost of durability.
Which EBC did you have on your bimmer and what was your experience?