When I bought my car I was going to get the M performance exhaust but I test drove a car with it at the dealership & thought it droned a lot on comfort at highway speeds. I decided to do a resonator delete with the stock exhaust & it sounds just right. No drone whatsoever & it has the occasional pops & crackles on sport+ but very settle.
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2018 M550I Xdrive Alpine White on Cognac Leather, Premium Enhanced Package, Drivers Assitance Plus, Remote Parking/display key, massage seats, 21 wheels style 629 Black Chrome. M performance brakes in blue, M performance carbon fibre diffuser, m performance side skirt extensions, m performance front lip. 45% tint, roof wrapped in gloss black.