Mercedes-Benz CLR

Mercedes-Benz CLR
The CLR during the 1999 24 Hours of Le Mans
CategoryLe Mans Grand Touring Prototype (LMGTP)
ConstructorMercedes-Benz
Designer(s)Gerhard Ungar[1]
PredecessorMercedes-Benz CLK LM
Technical specifications[2][3]
ChassisCarbon fibre and aluminium honeycomb monocoque
Suspension (front)Double wishbone suspension with pushrod-activated dampers
Suspension (rear)Same as front
Length4,893 mm (192.6 in)
Width1,999 mm (78.7 in)
Height1,012 mm (39.8 in)
Wheelbase2,670 mm (105 in)
EngineMercedes-Benz GT108C 5,721 cc (349.1 cu in) V8, naturally-aspirated, mid-mounted
TransmissionXtrac 6-speed sequential manual
WeightAppr. 900 kg (2,000 lb)
FuelMobil 1
TyresBridgestone
Competition history
Notable entrantsAMG-Mercedes
Notable driversGermany Bernd Schneider
Germany Nick Heidfeld
Germany Marcel Tiemann
France Franck Lagorce
France Jean-Marc Gounon
France Christophe Bouchut
Australia Mark Webber
Portugal Pedro Lamy
United Kingdom Peter Dumbreck
Debut1999 24 Hours of Le Mans
Last event1999 24 Hours of Le Mans
RacesWinsPolesF/Laps
1000

The Mercedes-Benz CLR was a prototype race car developed by Mercedes-Benz in collaboration with in-house tuning division AMG and motorsports specialists HWA GmbH.[4] Designed to meet Le Mans Grand Touring Prototype (LMGTP) regulations, the CLRs were intended to compete in sports car events during 1999, most notably at the 24 Hours of Le Mans which Mercedes had last won in 1989. It was the third iteration in Mercedes' 1990s sports cars, succeeding the Mercedes-Benz CLK LM, which in turn was born of the CLK GTR. Similar to its predecessors, CLR retained elements of Mercedes-Benz's production cars, including a V8 engine loosely based on the Mercedes M119 as well as a front fascia, headlamps, and grille inspired by the then new Mercedes flagship CL Class.[4]

Three CLRs were entered for Le Mans in 1999 after the team performed nearly 22,000 mi (35,000 km) of testing.[4] The cars suffered aerodynamic instabilities along the circuit's long high-speed straight sections. The car of Australian Mark Webber became airborne and crashed in qualifying, requiring it to be rebuilt. Webber and the repaired CLR returned to the track in a final practice session on the morning of the race, but during its first lap around the circuit, the car once again became airborne and landed on its roof. Mercedes withdrew the damaged CLR but chose to continue in the race despite the accidents. The remaining cars were hastily altered and the drivers were given instructions to avoid closely following other cars.[5]

Nearly four hours into the race Scotsman Peter Dumbreck was battling amongst the race leaders when his CLR suffered the same instability and became airborne, this time vaulting the circuit's safety barriers, crashing into trees and then coming to rest in an open field after several somersaults. This and earlier incidents led Mercedes not only to withdraw its remaining car from the event immediately, but also to cancel the entire CLR programme and move the company out of sports car racing.[6] The accidents led to changes in the regulations dictating the design of Le Mans racing cars[7] as well as alterations to the circuit itself to increase safety.[8]

  1. ^ Radu, Vlad (30 June 2021). "The Story of the Mercedes-Benz CLR, the Silver Arrow That Took Flight at Le Mans". Retrieved 18 December 2023.
  2. ^ Fuller, Michael J. (2011). "1999 Mercedes-Benz CLR". Mulsanne's Corner. Retrieved 9 March 2011.
  3. ^ "Fiche Voiture/Car's File - Mercedes CLR N°: 4". lemans.org. Automobile Club de l'Ouest. Archived from the original on 1 November 2000. Retrieved 23 April 2012.
  4. ^ a b c "Mercedes-Benz CLR for Le Mans Presented". DaimlerChrysler. 1999. Archived from the original on 8 May 1999. Retrieved 19 October 2014.
  5. ^ "Peter Dumbreck remembers 1999". lemans.org. Automobile Club de l'Ouest. 25 May 2012. Archived from the original on 23 October 2014. Retrieved 2 October 2014.
  6. ^ "Mercedes prepares to quit CLR project". Autosport. Haymarket Press. 21 July 1999. Retrieved 2 October 2014.
  7. ^ "Press Release: The Case Mercedes". Automobile Club de l'Ouest. 18 February 2000. Archived from the original on 23 February 2001. Retrieved 5 October 2014.
  8. ^ Jensen, Tom (7 March 2006). "SPEED Top 10 Moments #4: Mercedes Le Mans Flip". Speed Channel. Archived from the original on 21 August 2006. Retrieved 4 October 2014.

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