Earlier this year, BMW introduced a high-performance version of the BMW Z4, but it wasn't the Z4 M that many were hoping for. The 2011 BMW Z4 sDrive35is was unveiled at the 2010 North American International Auto Show in Detroit, but we recently spotted a BMW test mule in California that could revive hope for the M version after all. Driving in full camouflage, most of the styling of the BMW in question was obscured although some prominent cues were obvious.
Differing from a regular Z4, the model seen driving along the Pacific Coast Highway had dual exhaust outlets and the front fascia appeared to be more aggressive with larger side intakes, but these cues are also found on the sDrive35is. With 340 horsepower and 322 lb-ft of torque, the numbers for the Z4 sDrive35is speak for themselves making it even more unclear as to why such extensive body armor was used on this test vehicle. If BMW were to offer a Z4 M, it might keep this same twin-turbocharged, 3.0-liter inline-six, but add a sportier suspension setup and maybe even offer a manual transmission in addition to the seven-speed, dual-clutch gearbox.