My first question is, do you track your car? Second question how many km or miles does the car have currently? Also, do you drive city or highway? I’d bring her into the dealership or a trusted BMW garage. I have a 2018 335d wagon xdrive M sport with 28,000km and have 80% left on my brake pads front and back. I don’t track her but drive on the Autobahn at 200-240km/h. I have only taken her to 280km once. I want to track her but need Ceramic brakes a 10k USD upgrade. I Believe Others here with more experience than I will tell you what they would do. I wish you the best! Regards, X