The new BMW Z4 Roadster and Z4 M Roadster

The new BMW Z4 Roadster and Z4 M Roadster Contents 1. Short Story p.3 2. Drivetrain p.10 3. Chassis p.14 4. Safety and Technology p.16 5. Market p.19 6. Design p.22 7. History p.24 8. Standard Equipment p.27 9. Optional Equipment p.30 10. Technical Specifications p.35 11. Exterior and Interior Dimensions p.37 12. Torque curves p.39

1. Short Story

Nothing drives like a BMW 'M' car and no other roadster drives like a Z4. BMW'
s latest two-seat sportscar offers exhilarating performance and unparalleled
point-to-point speed. Backed up by a stimulating aural sound-track, purity of
design and a development process led by enthusiasts, the Z4 M Roadster
signifies the best of BMW. The arrival of BMW's most powerful production
compact roadster with its supreme on-road capability promises to make it one of
the most desirable sports cars of 2006.

BMW has also moved the benchmark for two-seat open-top sports on with the
addition of a revised non-M Z4, featuring new front and rear design, improved
specification and new powerplants. Customers in the market for two-seat
open-top motoring can now choose from ten Z4 models priced from £22,945 to
£42,750 and with power outputs ranging from 150hp to 343hp.

Product highlights:
... New Sport models introduced
... World's fastest fully electrically-operated soft-top
... 2.5-litre and 3.0-litre cars powered by the world's lightest six-cylinder
petrol engine
... 343hp 3.2-litre M Roadster engine, five-time International Engine of the
Year awards category winner
... Dynamic Stability Control+ fitted on Z4 for first time

See download attachment for table showing price and performance figures for Z4
models.

Engine:

The Z4 is powered by some of the smoothest, most refined engines currently
available. The line-up offers five powerplants starting with a 150hp 2.0-litre
four-cylinder petrol engine and rising to a 343hp 3.2-litre straight-six
ensuring a spread of performance to suit all tastes. All engines offer VANOS
variable valve timing technology with VALVETRONIC variable valve opening
technology featuring on all 'standard' cars (except the Z4 M Roadster).

Using the 3.2-litre engine that has won category honours five times in a row at
the Engine of the Year awards, the all-new BMW Z4 M Roadster is the new
flagship model of the range. With 63hp more than a Porsche Boxster S, on-road
performance is breathtaking. Capable of a zero to 62mph time of just 5.0
seconds, the Z4 M Roadster goes on to an electronically-limited155mph.

But it is not just the BMW Z4 M Roadster powerplant that has a story to tell.
Featuring the world's lightest production six-cylinder engine made of aluminium
and magnesium, the BMW Z4 3.0si uses VANOS and VALVETRONIC variable valve
technology to help it achieve 265hp and 315Nm of torque - figures which also
better the output of a Porsche Boxster. On the road this results in a zero to
62mph time of 5.7 seconds and an electronically limited top speed of 155mph.

The Z4 2.5si and Z4 2.5i Roadsters offer two outputs from the same six-cylinder
engine. The 2.5si delivers 218hp and 250Nm of torque and records a zero to
62mph time of 6.5 seconds before going on to a top speed of 149mph. Meanwhile,
the Z4 2.5i with its 177hp and 230Nm engine achieves a zero to 62mph
acceleration time of 7.1 seconds and a top speed of 142mph.

Representing the entry point to BMW Z4 ownership, the 2.0-litre four-cylinder
petrol model is powered by an engine built at BMW's Hams Hall production
facility in the Midlands. Using both VANOS and VALVETRONIC technology to
develop 150hp and a peak torque of 200Nm, the car is capable of a zero to 62mph
time of 8.2 seconds and a top speed of 137mph.

So smooth was this 2.0-litre powerplant in the first generation Z4 that testers
from Evo magazine were moved to comment that the car felt the same behind the
wheel as a six-cylinder engine. Top Gear magazine was similarly enamoured,
referring to the model as a car that made a lot of sense with buyers who get
the looks, dynamics and open air motoring of the rest of the Z4 line-up, but
with savings on the initial outlay, economy and even on insurance.

The Z4 2.0-litre is also a tax efficient proposition for the company car user
courtesy of CO2 emissions of just 181g/km that sees it slip into a lower
Vehicle Excise Duty tax banding than other Z4's. An award from Fleet Week and
Fleet Management publications, which voted the Z4 their Car of the Year, only
serves to back-up the roadster as a credible company car choice.

Transmission:

All the new Z4's come as standard with a six-speed manual gearbox and this
short-shifting 'box is the sole transmission available on the M Roadster. A
new 'Sport Automatic' gearbox, optional on 2.5si and 3.0si six-cylinder Z4's,
offers a full auto mode or the option to change gear using the gear stick or
paddles located behind the steering wheel. A 'Sport Automatic'-equipped car
not only changes gear faster compared to the previous automatic gearbox offered
on the original Z4 but blips the throttle on down-changes for a smoother
transition between gears.

This is the first use of paddles on a BMW automatic transmission system. All
previous Sequential Manual Gearbox (SMG) systems, as the name suggests, were
based on a manual 'box. Drivers of the Z4 2.5i can also specify the same
automatic transmission offered previously in the original Z4.

Chassis:

One of the stiffest chassis in its class provides the Z4 with the perfect basis
on which to engineer a sportscar with supreme on-road dynamics. With kerb
weights in the range between 1,295kgs and 1,485kgs - lighter than comparable
cars from Audi, and Mercedes - and a low centre of gravity, the Z4 range offers
true driving pleasure.

The Z4 Roadster's front suspension is a spring strut structure with forged
aluminium track control arms and twin-sleeve gas-pressure spring struts. The
rear suspension features reinforcement bars and thrust plates in the
underfloor, connecting the front of the rear bulkhead onto the body under sills
on both sides. The central arm rear axle also features twin-sleeve gas
pressure dampers for optimum road holding and comfort.

An optional Sport Suspension package lowers the ride height of the car by 15mm
and offers more focused ride characteristics for the enthusiast. The same
suspension arrangement is part of the standard equipment for Sport models.

The Z4 M Roadster has its own unique suspension ride height with spring and
damper compliance based on the 'standard' car. It also uses the same powerful
braking system of drilled and vented discs from the legendary BMW M3 CSL.

Safety and Technology:

The Z4 has the most advanced form of traction control system currently
available in the world - Dynamic Stability Control+ (DSC+). Building on the
already accomplished DSC system, DSC+ offers five further safety enhancements:

... Brake Pre-tensioning shortens stopping distances by priming the brakes if
the driver instinctively lifts off the accelerator in preparation for an
emergency stop.
... Brake Drying improves braking performance in the wet by periodically
gently applying the pads to the discs. In wet weather conditions, a film of
water can build up on the disc hindering stopping power but this slight braking
action removes this film and ensures optimum retardation.
... Hill Start Assistant allows the driver of a manual transmission car to
pull away smoothly on a gradient without having to balance the clutch and the
throttle. Brake pressure is maintained for the time it takes to move the foot
from brake to accelerator, preventing the car from rolling backwards.
... Fade Compensation can apply additional braking without any extra effort
from the driver. Following very spirited driving the brakes may experience
some fade due to excessive heat build up. However, Fade Compensation means the
pads still bite the disc for optimum stopping power.
... Soft Stop contributes to a smoother journey for all occupants. A small
proportion of braking pressure is released as the car comes to a standstill,
minimising the potential for a sharp, halting stop.

Other safety and technology benefits fitted as standard to the new (non-M) Z4
include Run-flat tyres and a Tyre Puncture Warning System (TPWS). The Z4 M
Roadster uses a combination of TPWS and M Mobility system. BMW's M division
remains committed to 'standard' tyres that contribute to the extreme
performance levels preferred by its customers.

BMW Assist comes as standard for a BMW Z4 specified with the optional
Professional navigation system and Bluetooth phone preparation. In the event
of an accident, the driver can use BMW Assist to make contact with the
emergency services. The system also broadcasts a pinpoint map location via
satellite to aid recovery. In the unfortunate event of an accident resulting
in airbag deployment, BMW Assist automatically contacts the emergency services.
BMW Assist also provides a similar level of assistance with regards to
breakdown cover courtesy of the automatic vehicle locator function.

Market and Marketing:

Research into Z4 owners shows the car is enjoyed as more of a performance
roadster than the Z3 it replaced. BMW's own customer research, based on buyers
of the original Z4, has shown that the two main purchasing drivers were style
and on-road performance.

To underscore the more masculine nature of the Z4, men account for more than
two thirds of buyers, while the biggest age group of Z4 owners falls into the
30-39-year-old category. The average annual income of a Z4 owner's household
is £72,000.

Sport models are also available for the first time on a Z4 and feature 18-inch
M Double spoke or optional 18-inch composite alloy wheels, M Sports seats,
Active Sports part leather/cloth upholstery seats (leather upholstery for 3.0si
models), three-spoke M leather steering wheel and M Sports Suspension.

www.bmw-audiobooks.com:

Inspired by the success of its innovative series of internet-based short films
under 'The Hire' banner, BMW is now entering another new media arena with audio
books. The four debut short stories mix the best in BMW product with
contemporary original literature.

The stories have been designed to be experienced while driving, with the
average length of 45 minutes per story matching the average driver's commute.
The first of the four stories features the BMW Z4. Don Winslow's 'Beautiful
Ride' was launched on 7 February, 2006, three weeks before the car's European
debut at the Geneva Motor Show. Further tales by Karin Slaughter, James Flint
and Simon Kernick featuring the BMW X3, 1 Series and 7 Series have also been
produced.

BMW Audio Books are available for free download via www.bmw-audiobooks.com
Users can then burn their own CDs and / or load the content to their iPods or
other MP3 players. All BMW's feature Business radio and single CD player with
MP3 capability and all BMW's can be adapted to play iPod-stored material.

Design:

The Z4 follows the classic design traits displayed by much-loved BMW roadsters
of the past such as the 328, 507, Z1, Z3 and Z8. With its rear-wheel-drive,
50:50 weight distribution, long bonnet and a driver seated towards the rear of
the car, the new Z4 is every inch a typical BMW roadster.

Subtle differences make the new Z4 stand out from the car it replaces. A
revised front spoiler and air intake enhance its distinctive look while also
improving the car's aerodynamic efficiency. The front bumper replicates the
sharp Z motifs found on the side profile of the car. The headlights have been
redesigned and now include corona light rings as standard when cars are
specified with Xenon lamps.

The front wheel arches incorporate side reflectors for improved on-road
visibility while, at the rear, all-new tail lamps feature BMW Z8-style
horizontal light conductor rods. The rear bumper has also been reprofiled.
The Z4 Roadster comes with a revised range of light alloy wheels and retains
its crown of still having the world's fastest electronically-operated hood.
Open-top driving can be enjoyed in just 10 seconds.

The Z4 M Roadster comes with an even more distinctive front spoiler arrangement
than the standard car. A larger air intake and two smaller ducts, one to each
side in place of foglights, play a key role in brake cooling and induction.
Two crease lines in the bonnet are manufactured through a new 'rapid-forming'
process introduced on the Spartanburg production line and visually emphasise
the power of the engine below. Four chrome exhaust pipes - a BMW 'M' hallmark
- leave no doubt about the car's performance. The Z4 M Roadster comes with
unique 18-inch light alloy wheels running on 225/45 tyres at the front and
255/40 tyres at the rear.

Spartanburg:

BMW's manufacturing philosophy is one of production following the market. With
the US as BMW's biggest market for sales, the Spartanburg plant was established
in 1994 to build the Z3. The X5 followed in 1999 and the Z4 in 2002. The
state-of-the-art facility in South Carolina is the sole worldwide production
centre of the Z4 Roadster, the Z4 M Roadster and also the forthcoming Z4
Coupé. It also continues to be the production home of the BMW X5.

Since opening in July 1994, BMW Spartanburg has produced more than 500,000 BMW
X5's, 300,000 Z3 and 100,000 Z4's. More than US$2.48 billion (approximately
£1.4 billion) has been invested in the 1,150-acre plant.

Not only does the plant provide a huge boost to South Carolina's economy - it
currently employs 4,500 associates - but it has also been designed to minimise
environmental impact. For example, recycled methane gas drawn from the
Palmetto Landfill site nearby now provides 25 per cent of the factory's power
needs. In fact, the project recovers sufficient energy to heat the equivalent
of 15,000 homes per year.

The use of this methane reduces carbon dioxide emissions across the plant by
the equivalent of driving 105 million miles per year or more than 4,000 times
around the earth.

In addition to this, the BMW Information Technology Research Centre based at
Clemson University in Greenville, South Carolina, opened in Summer 2005. The
84,000 sq. ft. building is equipped with six secure research zones and is used
by the technicians and engineers of the future to look at a host of ways of
streamlining manufacturing and car design processes.

More information on BMW's Spartanburg facility can be obtained from visiting
www.bmwusfactory.com

BMW Performance Centre:

Situated adjacent to the Spartanburg factory, the BMW Performance Centre offers
owners and potential BMW buyers the chance to fully exploit a car's potential
in a safe environment while also further honing their driving skills. Built in
1998, the US$12.5 million (approximately £7 million) centre has proved popular
with regular customers and thrill seekers alike by offering a range of driving
courses in most of the BMW model range. Courses range from a one day
introductory driving course for 15 to 18-year-olds costing US$400
(approximately £225) to a two and half day BMW M car course for experienced
drivers for US$3,650 (approximately £2,100).

More information is available by visiting the BMW Performance Centre website at
www.bmwusa.com/bmwexperience/PerformanceCenter