We suspect Tesla tuned it this way on purpose

the Aero Rear Diffuser fits perfectly on the car's rear bumper and creates a seamless integration with its existing design

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Street pro rear diffuser bmw 4 gran coupe f36 Mercedes SL R231 [2012-2016] We suspect Tesla tuned itStreet Pro Rear Diffuser BMW 4 Gran Coupe F36 Fits: BMW 4 Gran Coupe F36 2014 2017 Diffuser is not compatible with the towbar. Complete set includes: Street Pro Central rear diffuser Assembly kit Do you own the BMW 4 Gran Coupe F36 model and are you looking for optical trim elements that give your vehicle a sporty look? All the parts you need to make this change can be found in the extensive range of the Maxton Design online store. The Polish company