Tomorrow at the Geneva Motor Show, German-tuner Hamann will reveal an upgraded version of the F10 BMW M5. The widebody M5 adds larger fender and quarter panel extensions that increase the front and rear width on each side by 25mm and 30mm, respectively.

At the front, a new bumper fascia is offered with LED daytime running lights. At the back, the rear fascia helps reduce the aerodynamic lift.

The widebody Hamann M5 sits on ultra-light Unique Forged II wheels in front size 9.5Jx21-inch with Continental Sport Contact 5P tires in the size 265/30 ZR 21 and at the rear 12.0Jx21-inch with 325/25 ZR 21 tires. For those of you with extra money, the tuner also offers a the three-piece HAMANN aluminum wheel named Edition Race Anodized. It has an anthracite-anodized inner wheel face plus a mirror-finished outer rim flange with titanium bolts.

To provide a sportier ride, the ride height was lowered by 30mm.

But the best upgrade will come from under the hood. The company is currently working on a performance upgrade that will bring the total number of horsepower to 720 hp from standard 560. The torque was also increased to 900 Nm (662 lb-ft).

Inside, the company offers full upholstery in custom premium leather or Alcantara.

Stay tuned for live photos from the 2012 Geneva Motor Show!