20062006 Z4 M Coupe
Image credits: © Hamann.

2007 Hamann Z4 M

Sporting interior

2007 Hamann Z4 M
The Z4 Coupé is one of the highlights of the sports car §egmènt and, in M guise, delivers a performance that is way beyond criticism. Nevertheless, everything can be made that little bit better. HAMANN took up the challenge and has not only created an aerodynamic kit for the Z4 M Coupé but also boosted the engine output. Additionally, a large range of accessories contributes to greater individuality.

New aerodynamic componentsA HAMANN front spoiler gives the Z4 Coupé a more striking look. It gives the car even more sporting lines and comes wîth ellipsoidal fog lamps. At the same time, it cuts front-end lifting force. For customers who prefer to retain the original bumper, HAMANN can provide mouldings wîth air inlets. Side skirts lower the Z4 visually and make Chris Bangle's rather austere lines more pleasing to the eye. Additionally, an air inlet on each side, positioned just ahead of the rear wing, ensures better cooling for the rear brakes. The Laupheim-based tuning company also offers mouldings for the headlight, which round off the visual improvements at the front. To reduce rear-end lifting force, HAMANN fits a striking rear spoiler to the tailgate. The spoiler blends in perfectly wîth the basic design and emphasises the car's attractive rear end. The roof spoiler also makes an aerodynamic and visual contribution to the Z4 M Coupé by HAMANN. The final optical tweak is the rear diffuser, which HAMANN fits under the rear skirt, whereby cut-outs for the exhaust tailpipes act as counterparts to the apertures in the rear skirt. Thus, the tailpipes are completely surrounded by components, which gives the rear view an additional competition touch.

Anyone who considers the (limited) max. speed of 250 km/h to be insufficient can ask HAMANN to derestrict the engine, which results in a top speed of 273 km/h wîth the standard engine. Blessed wîth 343 bhp ex-works, HAMANN tickles a little bit more out of the high-revving engine. Reprogramming the standard engine management system produces an extra 15 bhp (11 kW). Torque rises by 20 Nm. Reprogramming also includes circumvention of the Vmax limit and, after being thus tweaked, the HAMANN Z4 M Coupé reaches 275 km/h.

A great engine needs a great sound. Accordingly, HAMANN offers a 4-tailpipe rear silencer wîth stainless-steel tailpipes (4 x 76 mm diameter) for the Z4 M Coupé. Even better sound and a more immediate reaction to throttle changes can be achieved by installing a high-performance exhaust manifold and metal sports catalytic converters.

HAMANN provides for even greater agility by fitting progressive suspension springs that lower the ride height by 25 mm. To make the body even stiffer, HAMANN also offers a two-part strut-tower breach (with HAMANN logo), which is fitted at the front.

Two wheel designs in 19 and 20 inches

2007 Hamann Z4 M
When it comes to wheels, the HAMANN range has few challengers. In other words, customers have a tempting choice of two aluminium designs and different dimensions for the Z4 M Coupé. HAMANN wheels can also be ordered as complete sets of wheels wîth tyres.

In the first place, there is the PG3 design. This attractive, multi-part, five-spoke wheel wîth a silver finish and polished outboard rim flange is available in the dimensions 19 and 20 inches. The wheel / tyre combinations offered:
- 8.5 J x 19 (front), 10 J x 19 (rear) / 235/35 ZR 19, 265/30 ZR 19
- 8.5 J x 20 (front), 10.5 J x 20 (rear) / 235/30ZR 20, 285/25 ZR 20
The single-piece Anniversary I wheel design wîth a multi-piece look is also available in the dimensions 19 and 20 inches. With its silver finish and highly polished INOX stainless-steel lips, the Anniversary I is also an eye catcher and available in the following combinations:
- 8.5 J x 19 (front), 10 J x 19 (rear) / 235/35 ZR 19, 265/30 ZR 19
- 9 J x 20 (front), 10.5 J x 20 (rear) / 235/30ZR 20, 285/25 ZR 20

A variety of HAMANN accessories and appointments make the interior of the Z4 M Coupé significantly more sporting, e.g., the exclusive HAMANN floor mats wîth HAMANN logo, a finely wrought aluminium hand-brake grip, competition aluminium pedals, a sports gear-lever knob (two versions: aluminium / leather or 'Racing' aluminium) and a carbon interior set in every conceivable colour, consisting of dashboard mouldings, door-grip mouldings, gear-lever knob and centre consol. The result: a breath of racing air inside the Z4! Naturally, HAMANN can also modify every Z4 M Coupé in accordance wîth individual customer requirements, e.g., wîth luxurious leather appointments in a variety of colours or multi-media conversions.

Z4 M Coupé by HAMANN: Completely customised inside and out

Complete aerodynamic kit

Derestricted top speed and power boost of 15 bhp and 20 Nm

PG3 and Anniversary I wheel designs in 19 and 20 inches

4-pipe rear silencer, high-performance manifold and sports catalytic converters

Lowering and strut-tower brace

Source - Hamann
A rear-wheel drive sports vehicle, the BMW Z4 was known as the E85 in roadster form, and E86 in coupe form. Replacing the BMW Z3, production began in 2002. The Z4 was much larger than its predecessor and featured a significantly stiffer chassis. Originally only available as a roadster, in 2006 a coupe version was finally released. Built in Spartanburg, South Carolina, the BMW Z4 has been in production since the 2003 model year. The Z4 is BMW's only two-seat sports car.

The BMW-Z4 was designed by Danish BMW-designer Anders Warming. Warming was later famed with creating the Mille Miglia Concept vehicle with many of the similarities from the Z4. Considered to be one of the more unique sports vehicles currently available, the Z4 features an exquisite inline six-cylinder engine, and fabulous styling. The Z4 is famed for its excellent handling and steering and it counters with a light curb weight.

Available as a roadster with a convertible top or a fixed-roof coupe, the BMW Z4 featured the traditional front-engine/rear-drive layout, an elongated hood (that some consider ‘shoe-like' in appearance) and rearward positioning of driver and passenger. To add tension to the Z4's shape, the car showcased an extremely chiseled exterior design.

The original BMW Z4 from 2003 through 2005 was broken down inti either 2.5i or 3.0i. The 3.0i used a 3.0-liter straight six-cylinder engine that achieved 225 hp, while the 2.5i had a 2.5-liter, inline six-cylinder engine that achieved 184hp. Available transmission were a five-speed manual that was standard on the 2.5, a six-speed manual that was standard on the 3.0, a five-speed automatic or a six-speed Sequential Manual Gearbox that was featured on the M3. Only a few small updates were made over these years, but not enough to differentiate one model from another.

Much like the Z3, the Z4 featured a strut type front suspension, while its rear suspension was completely different and was based on that of the E30 BMW 3-Series. The Z4 also featured a much more conventional multi-link suspension, rather than a semi-trailing arm suspension.

The 200 BMW Z4 was available in two trim levels, the 3.0i and 3.0si. The 3.0i featured 17-inch wheels, antilock brakes, power mirror and windows, stability control, manually operated seats and vinyl upholstery. Standard, the 3.0-liter inline six-cylinder engine was rated at 215 hp; the six-speed manual transmission was also standard, while a six-speed automatic is optional. The 3.0si came with 18-inch wheels, several improved interior updates and a 255-hp 3.0-liter inline six. Both trim levels offered a variety of option, these included a Premium package with a power-operated top, and a Sport package that was designed to improve the car's handling capabilities. It added stiffer and lower suspension, larger wheels with run-flat tires, BMW's Vehicle Stability Control system; Dynamic Driving control. The BMW Z4 coupe is only available in the 3.0si trim.
The Sport package isn't needed though for a rewardable driving experience, the BMW Z4 offers that no matter what. The coupe had an advantage over the roadster in the terms of handling because of its additional body rigidity.

A choice of four straight-six engines were available on the BMW Z4, the 2.2 L, 2.5 L, 3.0 L and 3.2 L, all are variants of the BMW M54 engine. A 2.0 L straight-4 engine was available in the European market. Not available in the U.S. the 2.2 L, 170 bhp version could achieve 100 km/h in 7.7 seconds. The 2.5 L engine could achieve 192 bhp at 6,000 rpm. With a manual transmission, it is rated at 6.8 seconds at 62 mph. Weighing 2,932 lbs with a manual transmission is 66lbs lighter than the 3.0 L version. The 3.0 L was capable of 231 bhp at 5,900 rpm and its straight six could achieve a 62 mph in just 5.9 seconds. The 3.2 L reached 330 bhp at 7,900 rpm and had 262 lb/ft of torque at 4,900 rpm.

A Bangle-designed concept coupe version of the Z4 was introduced at the Frankfurt Motor Show in 2005. A company announcement was made on November 22, 2005 that the coupe would be available for delivery in the U.S. by June 2006, along with the return of the M Coupe. On April 4, 2006, production began at the Spartanburg, SC BMW plant, and the production vehicles were unveiled at the New York Auto Show in April 2006.

The BMW Z4 was also available in an M-powered version. This was the most powerful car of the Z4 lineup and it featured a naturally aspirated, inline six cylinder engine that was used in the third generation of the M3. The Z4 M produced 340 bhp at 7,900 rpm and 270 lb/ft of torque. With a top speed of 250 km/h, the M could achieve 0-100 km/h in just five seconds. The M Roadster also shares its 6-speed Getrag 217 manual gearbox with the M3.

For 2006, the Z4 was extensively updated and because of this, all models from '06 on were even more improved and a better choice for buyers. BMW installed its new N52 I-6 engines in all of the Z4 line. Mid-year in 2006 BMW released the coupe body steel, both the 215-hp and 255-hp engines, and the six-speed automatic. The N52 featured a magnesium block construction which consisted of an aluminum interior for the cylinders, along with an outer magnesium block.

To achieve increased performance, this engine featured BMW's Valvetronic variable valve timing system, which is incredibly more powerful through the middle of the rev range, and also improved handling and turn-in due to the decreased weight over the nose of the car. Other updates included a retuned standard suspension that improved ride quality, a higher final-drive ratio that only improved acceleration, additional braking functionality for the stability control system, new wheel designs, minor interior trim revisions and updated front and rear styling. The brakes size was also increased on the 3.0si models for 2006.

The Z4 3.0i Roadster released in 2008, when equipped with the optional Sport package, came complete with wheels very similar to the original Z4 Coupe concept vehicle.

According to the Auto Press, the 2008 BMW Z4 ranks 7 out of 8 Luxury Sports Cars, this analysis is ranked on 24 published reviews and test drives, along with an extensive review of reliability and safety data. The '08 Z4 3.0si was a two-seat hatchback coupe that came with a 3.0-liter inline six-cylinder engine and a manual transmission. Automatic transmission is optional, and the Z4 was also available as a convertible.

On August 27 2008, the Z4 line ended its production in North America at its Spartanburg, SC plant. Production has been shifted to the Regensburg, Germany plant for the its next-generation model, the E89.

By Jessica Donaldson
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