M Sport Packages are now available for both the Z4 sDrive35i and well as the base model, Z4 sDrive30i. If that isn’t enough to tickle the enthusiast’s fancy, enter the Z4 sDrive35is.With a more powerful version of BMW’s heralded 3.0-liter twin-turbo inline six, the new BMW Z4 sDrive35is distills the Roadster’s performance potential to produce one of BMW’s fastest and best-handling Roadsters ever.The MY2011 Z4 sDrive30i and Z4 sDrive35i start at $46,875 and $52,775 respectively, including $875 Destination & Handling. The MY2011 Z4 sDrive35is will retail for $61,925 including $875 Destination & Handling.