The 2011 BMW Z4’s specs are as followsBMW has added a few new paint finishes to the mix, however, as well as the optional M Sports Package. The sDrive35is model will offer features like 18-inch light-alloy wheels in a five-spoke pattern as standard equipment. The 2011 BMW Z4 comes in three trim levels: the sDrive30i, the sDrive35i, and the sDrive35is.Standard interior features on the base models