BMW E89 is the chassis code of the second generation of BMW Z4

BMW Z4

The BMW Z4 is a rear-wheel drive sports car by the German car maker BMW. It follows a line of past BMW roadsters such as the BMW Z1, BMW 507, BMW Z8, and the BMW Z3. The Z4 replaces the Z3. First generation production started in 2002 at BMW USA's Greer, South Carolina plant, with production of both...

. It now has a retractable hardtop like the Mercedes SLK replacing the previous roadster and coupé

Coupé

A coupé or coupe is a closed car body style , the precise definition of which varies from manufacturer to manufacturer, and over time...

 versions for the 2009 model year. There are exclusively six-cylinder engines on this generation. However, there is speculation that turbocharged four-cylinder motors may replace the non-turbo six-cylinder powerplants.

The new model was officially announced on 13 December 2008. The vehicle was unveiled in 2009 North American International Auto Show

North American International Auto Show

The North American International Auto Show is an annual auto show held in Detroit, Michigan at Cobo Center, usually in January. It is among the largest auto shows in North America.-History:...

 in Detroit.

Technology

Since the new Z4 now has a retractable hardtop

Hardtop

A hardtop is a term for a rigid, rather than canvas, automobile roof. It has been used in several contexts: detachable hardtops, retractable hardtop roofs, and the so-called pillarless hardtop body style....

, it no longer comes in separate roadster and coupé versions. The two-piece, electro-hydraulic retractable hardtop in lightweight aluminium shell can be folded up or down in 20 seconds automatically. In the open state, the boot capacity is 180 liters (if closed: 310 l).

In the Z4 sDrive35i, the new 7-speed double-clutch gearbox is used. In the 23i and 30i a six-speed sports automatic transmission

Automatic transmission

An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...

 with Steptronic is offered. Fitted as standard is a 6-speed manual transmission

Manual transmission

A manual transmission, also known as a manual gearbox or standard transmission is a type of transmission used in motor vehicle applications...

.

EfficientDynamics regenerative braking is standard in most regions.
The Drive Dynamic Control is standard, which include NORMAL, SPORT, SPORT+ modes. Optional Adaptive M Sport Suspension adds electronic damping control.

The hand brake

Hand brake

In cars, the hand brake is a latching brake usually used to keep the car stationary, and in manual transmission vehicles, as an aid to starting the vehicle from stopped when going up an incline - with one foot on the clutch , the other on the accelerator In cars, the hand brake (emergency brake,...

 is electro-mechanically operated.

Design

The new roadster features a completely revamped interior designed by Nadya Arnaout, and exterior designed by Juliane Blasi.

Differences from the previous

Compared to the previous generation Z4, the new vehicle has grown 148 mm (5.8 in) longer, 9 mm (0.354330708661417 in) wider, 2.5 mm (0.0984251968503937 in) in wheelbase, and is significantly heavier, adding between 150 kg (330.7 lb) and 235 kg (518.1 lb) in unladen weight, when compared to the previous model.

The E89 is not produced, as its predecessor, in the Spartanburg, South Carolina

Spartanburg, South Carolina

thgSpartanburg is the largest city in and the county seat of Spartanburg County, South Carolina, United States. It is the second-largest city of the three primary cities in the Upstate region of South Carolina, and is located northwest of Columbia, west of Charlotte, and about northeast of...

 manufacturing facility

BMW Manufacturing Co. Spartanburg

The BMW US Manufacturing Company in Greer, South Carolina is BMW's only US production facility. It was built to serve the demand of BMW automobiles directly in the US...

, but in Regensburg

Regensburg

Regensburg is a city in Bavaria, Germany, located at the confluence of the Danube and Regen rivers, at the northernmost bend in the Danube. To the east lies the Bavarian Forest. Regensburg is the capital of the Bavarian administrative region Upper Palatinate...

.It is also the first BMW roadster to use iDrive

IDrive

iDrive is a computer system which is used to control most secondary vehicle systems in many current BMW cars. iDrive's user interface consists of a LCD panel mounted in the dashboard and a controller knob mounted on the center console....

.

Engines

Model	Years made	Engine Code	Engine Type	Power@rpm	Torque@rpm
Petrol engines
sDrive20i	2011-	?	1997 cc I4	184 PS@5000	270 newton metre@1250-4500
sDrive23i	2009-	N52B25	2497 cc I6	204 PS@6400	250 newton metre@2750
sDrive28i	2011-	N20B20	1997 cc I4	245 PS@5000-6000	350 newton metre@1500-4800
sDrive30i	2009-	N52B30	2996 cc I6	258 PS@6600	310 newton metre@2600
sDrive35i	2009-	N54B30 BMW N54 The N54 is a direct injection twin-turbocharged straight-6 automobile engine from BMW. It was launched in late 2006 as a high-performance option for the BMW 3-Series, first to be released along with the new 3-series E92 Coupé, to be followed closely by other existing 3-series models, then with...	2979 cc I6 twin turbo	306 PS@5800	400 newton metre@1300-5000
sDrive35is	2010-	N54B30 BMW N54 The N54 is a direct injection twin-turbocharged straight-6 automobile engine from BMW. It was launched in late 2006 as a high-performance option for the BMW 3-Series, first to be released along with the new 3-series E92 Coupé, to be followed closely by other existing 3-series models, then with...	2979 cc I6 twin turbo	340 PS@5800	450 newton metre@1400-4500 (Overboost: 500 newton metre)

The BMW Z4 sDrive35is also comes as standard with an M Sports Package including the M Aerodynamics Package and adaptive M Suspension featuring electronically controlled dampers.

US models include sDrive30i (until 2011) sDrive 28i (2012-) and sDrive35i.

Transmissions

Model	Years made	Standard	Optional
sDrive23i	2009-	6-speed manual	6-speed sport automatic
sDrive28i	2011-	6-speed manual	8 speed ZF automatic
sDrive30i	2009-	6-speed manual	6-speed sport automatic
sDrive35i	2009-	6-speed manual	7-speed dual clutch sport automatic
sDrive35is	2010-	7-speed dual clutch sport automatic

Performance

Model	Years made	0–100 km/h acceleration (sec)	Top speed
International models
sDrive23i	2009-	6.6 manual, 7.3 automatic	242 km/h (150.4 mph) manual, 239 km/h (148.5 mph) automatic
sDrive30i	2009-	5.8 manual, 6.1 automatic	250 km/h (155.3 mph)
sDrive35i	2009-	5.2 manual, 5.1 DCT	250 km/h (155.3 mph)
sDrive35is	2010-	4.8 DCT	250 km/h (155.3 mph)
US models
sDrive30i	2009-	5.8 manual, 6.1 automatic	150 mph (241.4 km/h) with Sport Package
sDrive35i	2009-	5.2 manual, 5.1 DCT	130 mph (209.2 km/h), 150 mph (241.4 km/h) with Sport Package
sDrive35is	2010-	4.8 DCT	155 mph (249.4 km/h)

Safety

All BMW Z4 have as standard safety equipment: ABS including emergency brake assist and CBC (Cornering Brake control), pretensioner and belt load limiter, and ESP with ASR. Furthermore, they are equipped with four airbags (driver/front seat passengers and two side airbags). The dynamic stop light feature has two stages, indicating how strongly the brakes are being applied. For normal braking, the main light element blinks, as well as blinking just before the vehicle comes to a standstill. Finally, two roll-over bars behind the seats and a reinforced windscreen protect occupants in case of roll-over.

BMW Z4 GT3

BMW also offers the BMW Z4 in motorsport, with a FIA GT3-specification car available to private teams. While the production version of the BMW Z4 has a six-cylinder engine, the GT3 car is powered by a 4.4-litre eight-cylinder engine derived from the BMW M3, which produces approx. 515 PS. The weight of the BMW Z4 GT3 is approx. 1190 kilograms (2,624 lb).

External links

• 2009 BMW Z4 Press Release