October 1998. Production totalled to 20,482 cars from 1999 to 2003. Unlike its predecessors, the M5 was produced on the same assembly line as the regular 5 Series models at the Dingolfing factory in Germany. The official performance figures are 0– acceleration time of 4.8 seconds and an electronically limited top speed of . In testing, an unrestricted M5 reached a top speed in excess of . The E39 M5 recorded a Nürburgring lap time of 8:20. The M5 received the September 2000 facelift (for the 2001 model year) at the same time as the standard E39 models. Changes included halogen "corona rings" in headlights (often called "Angel Eyes"), LED tail-lights and various interior upgrades. The mechanical specification was unchanged. For the subsequent two model years, changes were limited to the addition of new exterior colours (from September 2001) and the upgrade to a DVD-based navigation system (from September 2002). Production of a "Touring" (wagon/estate) E39 M5 model was evaluated by BMW, and at least one prototype was developed (in Titanium Silver with a Black Exclusive leather interior). However the Touring did not reach production, due to financial considerations. Engine The E39 M5 is powered by the BMW S62 V8 engine, which generates a power output of at 6,600 rpm and of torque at 3,800 rpm. The S62 engine has electronically actuated individual throttle bodies, an aluminium block and heads, variable valve timing (double-VANOS), and a semi-dry sump oil system. Drivetrain The transmission is the Getrag 420G six-speed manual, as used in the E39 540i but with an upgraded clutch due to the increased torque. The differential uses a shorter 3.15:1 ratio, and is a limited slip differential with 25% maximum locking. Chassis The E39 M5 uses aluminium-intensive MacPherson strut front suspension and multi-link rear suspension, as per the other V8 models of the E39 5 Series range. However, several changes were made by BMW M. Reduced spring height, lower. A specific shock valving, thicker front and rear anti-roll bars, polyurethane auxiliary springs, and steel balljoints. Although the six-cylinder E39 models use rack-and-pinion steering, the M5 (and other V8 models) retains the recirculating ball steering system, as used by previous generations of the M5. A quicker steering ratio of 14.7 was used, compared with 17.9 for other V8 models. It featured a Servotronic vehicle-speed-sensitive power assist which provides two levels of resistance controlled via console mounted Sport button. The Sport