CFRP driveshaft in the BMW M3/M4 replaced with steel

From November 2017 onwards, the CFRP driveshaft in the BMW M3 Sedan, BMW M4 Coupe and BMW M4 Convertible will be gradually replaced by an M specific driveshaft made of steel. BMW says this measure will create the necessary technical basis for meeting future statutory emissions requirements. At a later point in time, a petrol particulate filter (PPF) will be incorporated into the existing installation space in these models in major markets.

“The newly developed steel driveshaft has been...

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