While BMW won’t be doing a Z4M anytime soon, it has satisfied the speed demon in us (that loves roadsters) with the new 2011 BMW Z4 sDrive35is. The 3.0L inline-6 twin-turbocharged engine features increased air intake flow and increased boost pressure to release more power. With the combination of twin low-mass turbochargers and High Precision direct injection, output is increased to 335-hp with a peak torque of 332 lb-ft available from 1,500 rpm to 4,500 rpm.The enhanced engine management system of the BMW Z4 sDrive35is includes an electronically-controlled overboost function to briefly increase torque under full load by another 37 lb-ft. This temporary torque peak of 369 lb-ft gives the car a significant increase in acceleration. The BMW Z4 sDrive35is will complete the sprint from a standstill to 60 mph in just 4.7 seconds (preliminary). Top speed of the BMW Z4 sDrive35is is limited electronically to 250 km/h or 155 mph.With an electronically-controlled overboost function, torque is increased by another 37 lb-ft. That allows for a 0-60 mph time of 4.7 seconds, compared to the Z4 sDrive35′s time of 5.1 seconds.We’re not sure what BMW will price the Z4 sDrive35is at, but if a 0-60 mph difference of .4 seconds makes any difference to your life, get ready to pay a couple thousand over $51,900.The BMW Z4 sDrive35is is making its world debut as a 2011 model at the 2010 North American International Auto Show (NAIAS) in Detroit. The turbocharger system developed for the engine of the new BMW Z4 sDrive35is maintains a high output throughout the entire engine speed range. Nominal peak torque is increased to 332 lb-ft from 1,500 rpm to 4,500 rpm. Maximum output of 335 hp is delivered at 5,900 rpm.
