"Ultimate," as an adjective, means "last or last possible, final" according to the Oxford American Dictionary. Of course, BMW's advertising wizards were thinking about "ultimate" as a noun ("best ...

i cant compare this car to the same 2011 550i m xDrive well worth it ...many things replace or upgraded so no worries but enjoy 400 horsepower! This car has all possible features. There is few errors ...

This story has been updated to reflect a corrected list of BMW models, issued by SiriusXM. SiriusXM’s new hybrid radio system, which combines over-the-air reception with streaming and on-demand ...

The 2011 model-year BMW 5-series marks the start of the sixth generation of the midsize sedan. The 550i is powered by a 4.4-liter twin-turbocharged V8 rated at 400 hp and 400 lb-ft of torque. It's ...

We've been anticipating the sixth generation for some time now, and finally its release is just around the corner. Scheduled to be available this coming spring, the new 5s, in particular the 550i, ...

After logging a near-record 8,475 miles over the previous three months, time behind the wheel of the long- term BMW 550i xDrive fell way off. Our ongoing battle with BMW's infernal spec run-flat tire ...