The BMW M5 CS, a 627 HP twin-turbo V8 super sedan, rivals the Porsche 911 Turbo with 2.9-sec 0-60, luxury, and track-ready ...

Interestingly, the much-rumored high-performance model will probably not be badged as an M5 variant. Instead, it will likely adopt a nomenclature similar to that of the 1 Series M Coupe.Further ...

And second, Steve and the gang haven't just created a tuned M5, they've built a better one. Of course, all of this comes at a cost – $13,487 on top of the $93,600 M5 donor car. But consider this ...