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The whole BMW brake thing can be confusing, so I hope this helps. For economies of scale, BMW shares parts throughout its various lines. The G30 (5 series) and G11 (7 series) use the same brake parts. That is likely the reason why brakes parts for 5 and 7 series are sometimes conflated. Specifically, the 540i with blue calipers and base 740i without blue calipers use the same pads, rotors (348 diameter x 36 mm thickness) and calipers. The latter, however, varies slightly because those on the 540i are painted blue while those for the base 740i are bare aluminum. In short, look for description: "540i with blue calipers" when buying pads. Same pads are also described as 740i with "standard brakes" or "without painted calipers".
Typically, a semi-metallic pad generates more noise and dust than one with ceramic friction material. Not sure what EBC uses in Red Stuff pads, but that info usually appears in description. Ceramic pads are also easier on rotors, the expensive part of a brake system.
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