BMW has announced the 555i trademark last year. This began with a bunch of rumors earlier this year that a new 5.5l engine was in the works, but it is just not in the plans for the 5 at this time. The N63 engine being released in the new X6 ‘50′ will be the engine of choice. The N63 is an aluminum 4.4L, twin-turbocharged, direct-injected V8 engine from BMW that will be released officially to dealersrs this May.

The N63 produces 400 hp and over 450 ft/lbs of torque according to BMW. It utilizes a newly developed concept in the location of the turbos. The turbochargers are mounted in the “V” of the engine and the intake manifolds are located on the sides of the block. This allows for a more compact engine and reduces the overall width of the assembled engine.

Expect to see this motor utilized in the 555 much the way the current V8 is. Overall it will be the sportier model in the line up and offer the standard options and features the current model has. The availability of the sport package with aerodynamic body kit option will remain with some slight changes, including limited edition color choices. Choices of transmissions have not been officially confirmed but we have received several hints that point to a milder DCT will be available when combined with the sport package.

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Source: Bimmerfile

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