The 2015 BMW M4 saw lots of love at SEMA->ke216 this year, and for good reason. The German special has all the right roots to make it quite the tuner->ke2304 car for those daring to mess with something so good out of the box, like a twin-turbocharged, 3.0-liter, inline-six motor putting out a healthy 425 horsepower through a six-speed manual gearbox (don’t forget the optional seven-speed dual-clutch automatic for those afraid of more than two pedals). Then there’s the suspension, which is geared with obvious intention toward track usage over previous models, with “play-free” ball joints and elastomeric bearings, a CFRP strut-tower brace, and a rear axle that’s bolted directly to the rear subframe. The result is a car that simply begs for apexes.

LA-based body kit designer Vorsteiner, which produces aftermarket aero pieces and wheels for high-end imports such as Porsche->ke1, Ferrari->ke252, and Bentley->ke15, is celebrating 10 years of business, and as a gift to itself and anyone who enjoys full carbon-composite, wide-body Bimmers, it created the M4 that lays before you. With a focus on mixing an organic look with functional performance, the design process started earlier in the year, culminating with a debut in Vegas in October 2014.

After finalizing the overall design, Vorsteiner 3D scanned the stock coupe,->ke141 then overlaid the renderings to produce quick CNC prototypes to aid in development. The result, as you can clearly see, is pretty amazing. The lines pay homage to BMW’s touring car racing heritage, but keeps things within the realm of street usage. Oh, and did I mention that it’s full carbon composite?

Click past the jump to read more about the BMW M4 Special Edition GTRS4 By Vorsteiner.

Exterior

Vorsteiner claims the new fenders add two inches of width per side up front and three-and-a-half inches per side out back which is sizable, but not totally crazy compared to some of the other cars lurking around SEMA. The fenders also incorporate functional cooling ducts for the brakes, a feature often overlooked on custom wide-body kits. Complementing the new corners is an upgraded front bumper with integrated splitter, aero blade side elements, and a new rear bumper with an integrated rear diffuser. All are made from lightweight carbon fiber and coated in BMW’s factory Austin Yellow Metallic paint.

Taking advantage of the extra real estate under the fenders, we find custom three-piece forged wheels designed in-house and measuring in at 20 inches in diameter, with 10.5 inches of width up front and 13.5 inches in the rear. The cherry on top is on the rear, which features chrome trunk badging and quad custom-finished 90 mm (3.5-inch) exhaust tips.

Interior

Inside, you’ll find the stock setup mostly untouched, with the exception of a Vorsteiner-embroidered floor and trunk mat set. Everything else, like the copious M badging, race-inspired seats, and leather-wrapped multifunction steering wheel, are all retained. While I would like to see more, it's not a big deal. I like the interior of the M4 just fine.

Drivetrain and Suspension

The drivetrain upgrades are pretty mild as well, at least compared to the modifications made to the exterior, as the only mod is increased boost via ESS Tuning’s E-Tronic ECU retune. This retune increases output to an impressive 550 horsepower and 560 pound-feet of torque, all without any splicing or additional adjustments.

Lowering the stance is KW Suspension’s sleeve kit, which maintains BMW’s Dynamic Drive features, like active roll control and adjustable rigidity settings. Those larger wheels accommodate large tires as well, with Pirelli’s P Nero rubber measuring 275-mm width up front and 345-mm width out back.

Prices

Starting at $64,200, this luxury import just gets pricier as the option list is filled. But beyond BMW’s extras, anyone looking for their own carbon wide-body M4 from Vorsteiner should consider tacking on an estimated $25,000 for just the raw bumpers and fenders. Then there’s the paint, interior floor and trunk mat set, the wheels, the tires, the suspension and engine upgrades… and you’re probably looking at a car costing you well over $100,000.

Conclusion

Wide-body kits are everywhere at SEMA, but this one looks particularly well done. The fact that it’s carbon fiber makes it even better. The drivetrain and suspension upgrades are more or less an afterthought, but that’s okay; we understand this is a car that’s all about making its presence known on the show floor, and it does that with style and poise. If you like the M4, but want something unique to throw six-figures at, this might be the winner for you. Just avoid those low driveways; carbon fiber isn’t exactly malleable.