A couple of American wheel experts have shared their thoughts on sporty BMWs, and we couldn't help but bundle them together ...

BMW is celebrating ... from the M4 CS. The 3.0-liter twin-turbocharged inline-six delivers 543 horsepower, paired with an eight-speed automatic transmission and xDrive all-wheel drive.

is a tremendous quarter-mile elapsed time, and both of them are stupidly fast from a rolling start over the half mile as well ...