BMW Z4 (E89)

BMW Z4 (E89)
Overview
Manufacturer	BMW
Production	2009–2016
Assembly	Regensburg, Germany
Designer	Juliane Blasi (Exterior) Nadya Arnout (Interior)
Body and chassis
Class	roadster
Body style	2-door retractable hardtop
Layout	FR layout
Powertrain
Engine	2.0 L N20 turbo I4 2.5 - 3.0 L N52 N.A. I6 3.0 L N54 turbo I6
Dimensions
Wheelbase	2,495 mm (98.2 in)
Length	4,239 mm (166.9 in)
Width	1,790 mm (70.5 in)
Height	1,291 mm (50.8 in)
Curb weight	1,395 kg (3,075 lb) - 1,525 kg (3,362 lb)
Chronology
Predecessor	BMW Z4 (E85)
Successor	BMW Z4 (2018)

The BMW E89 is the second generation of the BMW Z4 roadsters, which were produced from 2009 to 2016. The E89 replaced the E85/E86 Z4 and is the fourth model in the BMW Z Series.

The E89 Z4 is the first BMW Z Series model to use a retractable hardtop roof, unlike the cloth roof used by its predecessors.^[1] Since the BMW E89 Z4 had a retractable hardtop, there are no longer separate roadster and coupé versions of the car.^[2]

There was no M model (ie "Z4 M" ) for the E89 generation.^[3]

Development and launch

The E89 is the first BMW to be designed by two female designers - Juliane Blasi (exterior) and Nadya Arnaout (interior) in 2006.^[4]

The BMW E89 Z4 was officially announced on 13 December 2008 and was unveiled in the 2009 North American International Auto Show in Detroit alongside the MINI Convertible.^[5] The BMW E89 Z4 was then launched in markets on May 2009.

A total of €130 million was spent from 2007-2009 in expanding the Regensburg plant for production of the BMW E89 Z4.^[6] Although its E85/E86 predecessor was produced in the Spartanburg plant in the United States, the E89 was produced in the BMW's Regensburg plant alongside the E93 3 Series convertible.^[7][8] Production of the BMW E85 Z4 was discontinued in mid-2008, and the BMW E89 Z4 was produced from February 2009 onwards.

Equipment

Equipment available for the E89 includes:

• Regenerative braking (called "Brake Energy Regeneration"), which is used to charge the battery instead of using an alternator.^[9]
• Start-stop system
• Electric power steering on all models.^[10]
• Driving mode selector (called "Driving Experience Control"), where Comfort, Sport and Sport+ modes change the behaviour of the throttle response, electronic stability control (DSC), automatic gearbox, power steering weighting and adjustable dampers ("EDC").^[11][12]
• Electric parking brake^[13]
• Emergency assistance dialling, BMW TeleServices, BMW Apps, BMW Online Services, Information Plus, Internet, Remote Services, TV Function and Voice Control
• Directional headlights ("Adaptive Headlights")^[14]
• Adaptive Cruise Control ("ACC")^[13][15]
• iDrive with 8.8 in (22 cm) display^[16]
• Heated steering wheel^[14]
• Keyless entry ("Comfort Access"), which also allows the roof to be raised or lowered using the keyfob.

Models

Early BMW E89 Z4 models included the sDrive 23i, sDrive 30i and the sDrive 35i. The sDrive 23i and sDrive 30i models then ceased production in 2011,^[17] and were replaced by the sDrive 20i and sDrive 28i. A sDrive 35is model was introduced in 2010, which has more power than the sDrive 35i and includes an overboost feature.^[18]

Since 2013, all four-cylinder variants of the new BMW Z4 meet the stipulations of the EU6 exhaust emissions.

Model	Engine	Power	Torque	Years
18i	N20B20 turbo I4	115 kW (154 bhp) @5000 rpm	240 N·m (177 lb·ft) @1250-4400 rpm	2013-2016
20i	N20B20 turbo I4	135 kW (181 bhp) @5000-6250 rpm	270 N·m (199 lb·ft) @1250-4500 rpm	2011-2016
23i	N52B25 N.A. I6	150 kW (201 bhp) @6400 rpm	250 N·m (184 lb·ft) @2750 rpm	2009-2011
28i	N20B20 turbo I4	180 kW (241 bhp) @5000-6500 rpm	350 N·m (258 lb·ft) @1250-4800 rpm	2011-2016
30i	N52B30 N.A. I6	190 kW (255 bhp) @6600 rpm	310 N·m (229 lb·ft) @2600 rpm	2009-2011
35i	N54B30 turbo I6	225 kW (302 bhp) @5800 rpm	400 N·m (295 lb·ft) @1300-5000 rpm	2009-2016
35is	N54B30TO turbo I6	250 kW (335 bhp) @5800 rpm	450 N·m (332 lb·ft) @1400-4500 rpm	2010-2016

sDrive35is model

The sDrive35is model was fitted with an upgraded version of the N54 engine, which was later also used in the E82 1 Series M Coupe. This engine produces 250 kW (335 bhp) and includes a computer-controlled overboost function for the 3rd to 7th gears. The boost function activates after every gear change with full throttle, and lasts for 7 seconds between 1500 and 4500rpm.^[19] Peak torque during overboost is 500 N·m (369 lb·ft), compared with 450 N·m (332 lb·ft) without overboost.^[20]

The only transmission available for the sDrive35is was a 7-speed dual-clutch transmission (DCT).^[21] The sDrive35is also includes 18 inch alloy wheels with wider rear tyres, larger brakes, revised rear bumper and front apron, sports suspension, sports exhaust, sports steering wheel and various interior trims.^[22][23]

Trims

The base trim level is called sDrive, with the higher "M Sport" trim level available as an option for most models. "Packages" of additional equipment were also available: initially the Design Pure Impulse,^[24] which was replaced by the Pure Traction Design package and Pure Fusion Design package in 2013.

The M Sport trim level includes 18” alloy wheels, leather upholstery, sports seats, revised front and rear bumpers, sports steering wheel, sports suspension and various interior trims.^[25][26][27]

The Pure Traction Design Package includes: the exclusive Valencia Orange exterior paint colour (regular colours were also available with the package), sports seats and various interior trims.^[28][29]

In early 2014, the Pure Fusion Design Package was released. This package sits above the BMW Pure Traction Design Package and includes: the exclusive Sparkling Brown exterior paint colour (regular colours were also available with the package), sports seasts, white leather upholstery and various interior trims.^[30][31][32]

Transmissions

The available transmissions are:

• 6-speed manual Getrag G56-17BG - Z4 18i, 20i, 23i, 30i^[33]
• 6-speed manual Getrag G56-53BZ - Z4 35i^[34]
• 6-speed automatic ZF 6HP19 - Z4 23i, 30i^[35]
• 8-speed automatic ZF 8HP45 - Z4 18i, 20i, 28i^[36]
• 7-speed dual clutch Getrag GS7-D36SG - Z4 35i, 35is^[37]

Concept cars

BMW 328 Homage (2011)

This was a concept vehicle commemorating 75th anniversary of BMW 328. It included exterior and interior parts made of carbon fibre reinforced plastic (CFRP); leather, matt and high-gloss black polished aluminium as well as the CFRP interior; asymmetrically designed windscreen with a recess in the middle, four wide leather straps run across the bonnet, two-part light alloy wheels with black aluminium rim and black chrome butterfly nut bearing the BMW emblem.^[38]

The vehicle was unveiled in 2011 Rolex Monterey Motorsports Reunion and later in 2011 Pebble Beach Concours d'Elegance.^[39]

Zagato Coupé (2012)

First introduced in Lake Como, Italy at the Concorso d'Eleganza Villa d'Este on 25 May 2012, The BMW Zagato Coupé is a concept car based on the Z4 Coupé, which was made in collaboration with Zagato - the Milan-based coach builder. Since Adrian van Hooydonk and Zagato chief designer Norihiko Harada were friends, the decision was quickly made when Andrea Zagato proposed a collaboration with BMW.^[40]

The body of the BMW Zagato Coupé was built entirely by hand and includes a double-bubble roof shape.^[41] The paint colour is called Rosso Vivace, and changes colour depending on how the light hits the body, ranging from a near black to a bright red.

The kidney grille of the BMW Zagato Coupé is made out of many small matt "z" letters, and the chrome “z”s are used only on the visible side of the octagons.^[42] The two “z”s in the air intakes and BMW badges are the only gleaming chrome elements on the BMW Zagato Coupé. A matt finish is used for the diffuser edging, exhaust tailpipes and wheels. inspired by a propeller. A “z” is embroidered into the seats.^[43]

Zagato Roadster (2012)

The BMW Zagato Roadster is a one-off concept car made by Zagato in collaboration with BMW and was introduced at the Pebble Beach Concours d'Elegance on 19 August 2012. It was developed due to the positive reaction to the Zagato Coupé concept which was shown three months before. The BMW Zagato Roadster was created in six weeks, from the first design idea to the finished model.^[44]

The soft-top cover of the BMW Zagato Roadster uses a double-bubble shape.^[45] The paint colour changes appearance depending on how the light hits the body, ranging from dark grey to a light silver. The headlights include a LED light strip set into the matt surface above the headlights.^[46] A silver “z” emblem located below the flank vents is a symbol of Zagato's input.

The Zagato Roadster shares some styling features with the Zagato Coupe, including tinted tail-lights, kidney grille with z-design grating and twin circular headlights and a three-dimensional front apron shape.^[47]

The Zagato Roadster has a black interior, with a strip of brown leather extending trim which also covers the roll-over bars.^[48]

Model year changes

2011

• Six-cylinder sDrive23i and sDrive30i models replaced by turbocharged four-cylinder sDrive20i and sDrive28i models.

2012

• Roof mechanism can now be operated at up to 40 kilometres per hour (25 mph).

2013 facelift (LCI)

The Z4 facelift (also known as LCI) models were released in March 2013. Major changes are:

• Redesigned headlights (now using LED lamps), tail-lights and side indicators.^[49][50]
• Interior changes including black surrounds for the central air vents, revised switches, control panel and buttons.^[51]
• sDrive18i model introduced, powered by the 115 kW (154 bhp) N20 turbocharged four-cylinder engine.^[52]
• "Pure Balance Design" and "Pure Traction Design" options packages introduced.

Safety

Available safety features include:

• electronic stability control ("Dynamic Stability Control"), including cornering brake control and traction control ("Dynamic Traction Control")^[53]
• emergency brake assist ("Dynamic Brake Control")^[54]
• Airbags for the driver, passenger, lower side impact, upper side impact (head) and knees.^[55][56]
• Tire pressure monitoring system^[57]
• Rollover protection bars behind the headrests.^[58]

Production volumes

Yearly production volumes are as follows:

Year	Production	Change in Previous Year
2009	22,761	n/a
2010	24,575	+8.0%
2011	18,809	-23.5%
2012	15,249	-18.9%
2013	12,866	-15.6%
2014	10,802	-16.0%
2015	7,950	-26.4%
Total	113,012

The production of Z4 ended in August 2016, with last vehicles being made at Regensburg.^[59]

Motorsport

BMW Z4 GT3 (2010-2015)

An FIA GT3-specification car was available to private teams.^[60] 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 GTS, which produces approx. 515 PS (379 kW; 508 bhp). The weight of the BMW Z4 GT3 is approx. 1,190 kilograms (2,624 lb). In 2015, BMW Motorsport started work on the car's successor, the BMW M6 GT3, of which it replaced the Z4 GT3 the following year.

In its first year of Z4 GT3 racing, the car proved competitive in the FIA GT3 European Championship as well as not only emerging victorious from the Dubai 24 Hour endurance event, but also heading to second place from a low 49th position at the 2011 24 Hours of Spa-Francorchamps event by the Need For Speed Team Schubert.^[61]

Nobuteru Taniguchi and Taku Bamba were the champions of the GT300 class in the 2011 Super GT season. Tatsuya Kataoka and Nobuteru Taniguchi repeated this in 2014.

BMW Z4 GTE (2012-2015)

The Z4 GTE competed in the 2013 American Le Mans Series GT, the 2014-2015 United SportsCar Championship GTLM and the 2014-2015 European Le Mans Series. It is powered by the P65B44 V8 engine.

Turner Motorsport won the inaugural 2014 Tudor United SportsCar GT-Daytona Championship with an altered version of the Z4 GT3.

References

External links

• http://www.bmw-motorsport.com/en/cars/bmw-z4-gt3.html

Wikimedia Commons has media related to BMW E89.

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