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The BMW E53 is the first-generation BMW X5 mid-sized luxury crossover SUV. It was produced from 1999-2006 and was replaced by the BMW E70. The E53 was developed at a time when BMW still owned Land Rover and as such shares many components and designs with both the Land Rover Range Rover L322 model (specifically the Hill Descent System and Off Road Engine Management system) and the BMW E39 5-series (specifically engines and electronic systems). The entire in-car entertainment system (Radio Function, Navigation System, Television and Telecommunications systems) are shared with other BMWs and L322. As a result the X5 model earlier models and L322 can be easily upgraded with the newest BMW technologies. ==History== The history of the X5 begins in 1994, when ideas began on a BMW sports utility vehicle after the acquisition of Land Rover. Eduard Walek was named project leader and chief engineer of the E53. Chris Chapman joined BMW Group's Designworks in California later and began working with Bangle in Munich on two full-scale clay models of the E53 for two months. By the autumn of 1996, design work was approved and the design basis for the X5 (E53) was defined, 35 months prior to production. After supplier and engineering involvement, the final design freeze was reached in the first half of 1997, with prototypes being tested from the second half of 1997. Design patents were filed on June 10, 1998 and December 9, 1998, being registered in the U.S. on January 18, 2000.〔(【引用サイトリンク】title=BMW: Driven by Design )〕〔(【引用サイトリンク】title=Design boss plans Hyundai's next big splash: Christopher Chapman's goal: Refine bold styling )〕〔http://webcache.googleusercontent.com/search?q=cache:btGo3Y6Lpk0J:www.pharma-food.de/ai/resources/2608c6dce13.ptxt+&cd=2&hl=en&ct=clnk&gl=us&lr=lang_en|lang_de&client=firefox-a〕〔(【引用サイトリンク】title=Eyes off the road: BMW confirms plans for sport 'activity' vehicle )〕 The takeover of Rover in 1994 proved to be very beneficial for BMW in the development of the X5. BMW engineers were able to look at and use Range Rover technology and parts in the development of the X5 - one such example would be hill-descent control. In many respects, the design of the X5 was influenced by its British counterpart; for example, the X5 got the two-piece tailgate straight from the Range Rover. Many parts and electronics were also taken directly from the E39 5 Series parts bin to save costs. In contrast to the Range Rover models, the X5 was designed as a sporting road car: its off-road capabilities are significantly less than those of Land Rover. BMW reportedly worked hard to ensure it was referred to as an ''SAV'' (Sports Activity Vehicle) instead of an ''SUV'' (Sports Utility Vehicle). Even though the X5 was an all-wheel drive vehicle, BMW chose from the start to route 62% of the engine's torque to the rear wheels, making it feel as close as possible to the company's rear-wheel drive sedans. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「BMW X5 (E53)」の詳細全文を読む スポンサード リンク
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