Images: BMW E85.I Z4 Roadster (2003-06)
Released in July 2003, the BMW E85 Mk.I (E85.I) Z4 Roadster was a two-seat convertible with a soft-top roof. Manufactured in South Carolina, USA, the rear-wheel drive Z4 Roadster was available with BMW’s 2.5-litre M54B25 and 3.0-litre M54B30 inline six cylinder petrol engines, for the 2.5i and 3.0i variants respectively. These engines featured double overhead camshafts, four valves per cylinder, variable valve timing for intake and exhaust valves and electronic throttle control… Read full BMW E85 Z4 Roadster review
Images: BMW E85.II Z4 Roadster (2006-09)
Released in April 2006, the BMW E85 Mk.II (E85.II) Z4 Roadster introduced new engines, transmissions, safety equipment and features. The E85.I Z4 2.5i and 3.0i variants were replaced by the E85.II Z4 2.5si and 3.0si which were powered by BMW’s N52B25 and N52B30 engines, respectively; the high-performance Z4 M Roadster powered by BMW’s S54BB32 engine was also introduced. Compared to their M54 predecessors, the N52 engines introduced variable valve (BMW’s valvetronic) and had crankcase made entirely of magnesium and aluminium. The BMW E85.II Z4 Roadster could be identified by its new bumpers with rectangular fog lights for th
