The HAMANN Z4 sDrive35i features new aerodynamic body parts, a customised interior and a more powerful engine.

Hamann Motorsport has released details of its new BMW Z4 sDrive35i-based car. Improvements were made both under the skin and in the styling department. There are also customisation options for the interior which include Hamann-branded foot mats, an aluminium gear knob and complete leather fittings.

The exterior is characterised by two LED daytime running light arrays, a new front spoiler, side skirts, a new rear apron and an aerodynamic spoiler on the deck lid. The sports exhaust system burps out a deep pleasing sound through its four tailpipes.

Two 8.5Jx20 inch alloy wheels with 235/30ZR20 rubber are at the front axle while the rear features 10.0Jx20 rims with 295/25ZR20 tyres. Special chassis springs were used to lower the suspension system by 30 millimetres (1.18 inches).

Hamann remapped the 3.0-litre force fed engine's ECU to extract more power and torque. From the standard 225 kW (302 bhp/ 306 PS) and 400Nm (295 lb-ft) the tuner was able to garner an extra 40 kW (54 bhp / 54 PS) and 140Nm (103 lb-ft) respectively. Furthermore, the standard vehicle's 250 km/h (155 mph) electronically limited top speed has been liberated to fullfill its true 285 km/h (177 mph) potential.

Gallery: Hamann Z4 E89 tuning program released