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Experience the ultimate BMW roadster sound showdown as the Z4 35i (E89) with its 3.0L twin-turbo inline-6 goes head-to-head with the legendary Z4M (E85) powered by the 3.2L naturally aspirated S54 ...
Which roadster sounds better — the naturally aspirated 3.2L inline-6 from the BMW Z4M (E85), or the twin-turbo 3.0L in the Z4 35i (E89)? This sound battle compares both engines through cold ...