BMW Z4 sDrive35is – Think of it as Z4M
The only thing that prevents the BMW Z4 from being worthless is performance. Everyone knows that these things start from a bad day and can be stopped on a peso, which is good because it means that it is fast enough to exceed the "flame surface" BS that the Bavarians decided to impose on such a powerful drivetrain and chassis. .
Not content to leave well enough alone in the performance department (and when are Bavarians ever content to leave well enough alone?), they have now rolled out the Z4 sDrive35is. Since there’s no official plans for an M variant of the Z4, this is about as close as you’re likely to get.
Having its debut at the 2010 North American International Auto Show in Detroit, BMW says ” ... the new BMW Z4 sDrive35is distills the Roadster’s performance potential to produce one of BMW’s fastest and best-handling Roadsters ever. ” OK, I won’t quibble with them on that.
How, you ask? Simple: More air, boost, and torque.
The latest BMW mill features better air intake flow and also increased boost pressure, as well as two low-mass turbochargers and “High Precision” direct fuel injection. BMW says that this gives the Z4 ” ... an output a naturally aspirated engine would only be able to provide through more cylinders and larger displacement. ” Yeah, two turbos usually do give you that, now don’t they?
Speaking of the turbos, they were developed to maintain a high output throughout the entire engine rev range. Peak torque is bumped up to 332 lb-ft from 1,500 rpm to 4,500 rpm, and the maximum power output is 335 hp, that coming in at 5,900 rpm.
There’s also a slick, race track derived goody known as overboost for the Z4 sDrive35is.
Thanks to an enhanced engine management system, an electronically controlled overboost function briefly increases the torque under full load by another 37 lb-ft. That could be fun. And addictive. I wonder what would happen if you were to bring it in to the dealership for warranty service, and the computer was to show you were on that overboost function constantly?
Anyway, the short-term torque peak of 369 lb-ft gives the car a noteworthy enhancement in acceleration. BMW says the Z4 sDrive35is will sprint from a standstill to 60 mph in just 4.7 seconds. Top speed? That’s limited electronically to 155 mph.
The Z4 sDrive35is also features such goodies as High Precision direct injection and BMW EfficientDynamics, enhanced electric power steering, a 7-speed double-clutch transmission with special programming, and M Sport upgrades to the aerodynamics and adaptive M suspension as well as an M Sport interior in new Kansas Walnut leather.
No, I don't know what this has to do with Kansas.
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