The fifth generation of the BMW 3 Series range of compact executive cars is designated under the model codes E90 (saloon), E91 (estate, marketed as 'Touring'), E92 (coupé) and E93 (convertible). The model was introduced in December 2004, and produced by BMW until October 2013 and is often collectively referred to as the E90 or E9x. The E9x saw the introduction of run-flat tyres to the 3 Series range. Models with run-flat tires are not equipped with a spare tyre. The E92 335i was the first 3 Series model produced with a turbocharged petrol engine. It was also the first 3 Series to include the iDrive operating system, which consists of navigation, infotainment and essential vehicle functions. The E90/E92/E93 M3 is the only generation of M3 to be powered by a V8 engine. Introduced in 2007, it uses the BMW S65 naturally aspirated V8 engine and was produced in saloon, coupé and convertible body styles. Following the introduction of the F30/F31 3 Series in February 2012, the E90/E91 saloons and estates were phased out. However, the E92/E93 coupés and convertibles remained in production through the 2013 model year, after which they were replaced by the F32/F33 4 Series models. Development and launch The design for the fifth generation 3 Series was frozen in mid-2002, approximately 30 months before the start of production. The saloon and estate were designed by Joji Nagashima. Marc Michael Markefka designed the coupé and convertible. The range was introduced in March 2005 for MY2005 with the saloon and estate body styles. The coupé was introduced in 2006 and the convertible was introduced in 2007, both for MY2007. Significant cosmetic and mechanical changes were done to improve the design and performance compared to the previous generation. The E90 series is larger than its predecessor, with a longer wheelbase, wider tracks, and a roomier interior. Body styles Saloon (E90) The saloon model was the first model sold of the E90/E91/E92/E93 3 series, being launched on 5 March 2005 for the 2006 model year. Production continued until a facelift revision was made for the 2009 model year. Production of the E90 concluded after the 2011 model year, succeeded by the F30 for 2012. Touring (E91) The E91 wagon/estate models were marketed as 'Touring' in Europe and 'Sports Wagon' in the North America. Optional equipment included a panoramic sunroof, which extends to the rear passenger area. Trim levels typically were