Which BMW roadster sounds better? In this head-to-head sound battle, we compare the raw, high-revving 3.2L inline-six of the ...

It turned out that 2011 was to be the year of the souped-up N54 BMWs, as the Z4 sDrive35is joined the 335is and 1 Series M Coupé in offering an extended farewell to the twin-turbo inline-six ...