wheels, making it feel as close as possible to the company's rear-wheel drive sedans. Engines Petrol Diesel Interior design The interior design of the E53 X5 was shared with the BMW 5 Series (E39), featuring a similar dashboard layout. The BMW Business Cassette head unit was standard equipment on all E53 X5 models, and included controls for a separately-mounted CD changer unit. The BMW Business CD head unit was optional, and later became standard equipment on newer E53 X5 models. The BMW Business CD head unit also included controls for an accessory CD changer unit. A GPS navigation system radio was also available, and replaced the standard CD player with a cassette player located behind the unit's retractable LCD display screen, but included controls for an accessory CD changer unit. A "Hi-Fi" premium sound system was standard equipment on all E53 X5 models, while an upgraded system with a Digital Sound Processing (DSP) was optional, regardless of head unit option. The BMW Assist telematics system was an option on the E53 X5, and included an "SOS" button in the overhead console. Production The X5, along with the BMW Z4 (E85) roadster, BMW X6, and BMW X3 were manufactured in BMW's South Carolina plant in Greer and at the BMW de México plant in Toluca, Mexico, alongside the BMW 3 series, BMW 5 series and BMW 7 series. Production of the E53 X5 began on 1 September 1999 and ceased on 22 September 2006. X5 LM A one-off version known as the X5 LM was equipped with the P75 engine based on the S70/3 V12 engine from the 1999 Le Mans winning BMW V12 LMR. It was used by Hans-Joachim Stuck to set a lap record at the Nürburgring in 2000. 4.6is and 4.8is A sport model, badged 4.6is was released in 2001. The 4.6is, equipped with the M62B46 V8 engine, made . The 4.6is was available in 4 colors (black, imola red, estoril blue, and titanium silver). It featured 20 inch wheels that were fitted over larger brakes than the stock X5. It also had additional rear fender flares along with different front and rear bumpers. In 2004, the 4.6is was replaced by a 4.8is model which was not the M62B48 4.8L V8, which Alpina developed for its Alpina B10 V8S and the Alpina Roadster V8, but rather an entirely new engine called the N62 engine producing . 2003 facelift