The Audi R8 is a Le Mans Prototype sports-prototype race car introduced in 2000 for sports car racing as a redevelopment of their Audi R8R (open-top LMP) and Audi R8C (closed-top LMGTP) used in 1999. In its class, it is one of the most successful racing sports cars having won the 24 Hours of Le Mans race in 2000, 2001, 2002, 2004, and 2005, five of the six years it competed in total. Its streak of Le Mans victories between 2000 and 2005 was broken only in 2003 by the Bentley Speed 8, another race car fielded that year by Volkswagen Group.[1]
The petrol-powered Audi R8 race car was in 2006 replaced by the new Audi R10 TDI Diesel; however, the need to further develop the R10 meant that the R8 saw action in a few races leading up to the 24 Hours of Le Mans.
History
1998: The challenge
In 1997, sports car racing and especially the Le Mans 24 Hours was popular among factories such as BMW, Mercedes-Benz, Porsche, Toyota, Nissan Motors, and others. At that time, Audi Sport boss Wolfgang Ullrich started to evaluate the options of joining.
With the upcoming American Le Mans Series also providing a stage for the US market, Audi announced plans in 1998 to compete in 1999, with the Audi R8R powered by a 550hp (410kW) V8 turbo. As it was considered the better choice for a whole race due to less weight and wider tires, Audi ordered an open-top roadster from Dallara to be developed and run by Joest Racing.
Yet, during the autumn of 1998, after the necessity of GT1 homologation was dropped in favour of LM-GTP prototypes, closed GT coupés like the Porsche 911 GT1, Mercedes-Benz CLK-GTR, and the Toyota GT-One proved successful. In response, Audi also ordered their newly acquired Norfolk-based Racing Technology Norfolk, led by Tony Southgate, to build a closed-cockpit car using the same drivetrain.
The ACO rules for closed-top prototypes allowed cars to run with larger air restrictors, resulting in more power (about 600hp), which resulted in a higher top speed in combination with the lower drag. To compensate this advantage over the duration of a race, the LMGTPs were limited to smaller tyres and smaller fuel tanks.
Following a period of testing, two R8Rs debuted at the 1999 12 Hours of Sebring. The BMW V12 LMR won, which was a strong sign towards the race in France. The already tested open-top Audi R8R, entered by Joest Racing, was not fast enough to challenge for a win, finishing third.
After further tests and modifications, the Audis returned for Le Mans. The new debuting R8Cs lacked pace and unfortunately suffered mechanical gearbox woes. Lap times were 10 seconds down from the leading LMP and LMGTP competitors. Joest's R8Rs ran steady, yet still were too slow to run for pole position. After a race that had the spectacular flights of the Mercedes-Benz CLR and leading cars of Toyota and BMW crashing out, the Audi R8Rs took third and fourth behind the surviving #15 BMW V12 LMR and the Japanese-driven Toyota.
Based on the experiences, Audi decided to regroup for 2000, and built a new R8 spyder together with Joest and Dallara. The British-built R8C coupe was retired, but Audi-owned Bentley developed the concept of the R8C closed-cockpit LMGTP and entered the Bentley EXP Speed 8 in 2001, winning the race with the Bentley Speed 8 in 2003.
1999: Retiring competitors
After the 1999 Le Mans shame, Mercedes retired from GTs to focus on the return of the DTM touring cars in 2000, as well as on F1. Toyota and BMW also went to F1, with BMW at least continuing to race for two years in the ALMS, where the open roadster of Bill Auberlen also suffered a "back flip" during the Petit Le Mans at Road Atlanta in 2000, as the closed-cockpit Porsche of Yannick Dalmas had done in 1998. Despite the BMW V12 LMR not receiving further development, the German team Schnitzer Motorsport was almost as effective as Joest. Still, the BMW V12 LMR could not match the Audi R8's might in the championship and lost almost every race against it. BMW quit the top class to race the BMW M3 in the GT class since, dominating in the ALMS and in WTCC, as well as at the 24 Hours Nürburgring.
This left only Porsche as a major possible challenger for 2000; however, the Porsche LMP project was scrapped before it had a chance to race. Rumours at that time said that Ferdinand Piech himself made them stay away, using his influence as a co-owner of Porsche, as well as his management role at Volkswagen, which would develop the upcoming SUV VW Touareg in cooperation with the Porsche Cayenne.[2] The Porsche V10 racer was turned into the Porsche Carrera GT instead.
The Audi R8 is a sports-racing car prepared for the LMP900 class at Le Mans and in the American Le Mans Series. The car was developed by Audi Motorsport and Joest Racing, and debuted in 2000, winning the 12 Hours of Sebring.
The R8 won Le Mans five times (2000, 2001, 2002, 2004, and 2005) and the overall season championship in the American Le Mans Series six times in a row (from 2000 to 2005).[3]
The R8 won a hat trick at Le Mans in 2000–2002, campaigned by Audi Sport Infineon Team Joest and driven by Tom Kristensen, Emanuele Pirro, and Frank Biela. First time out in 2000, the team won a 1-2-3 finish. Since then, the Audi R8 has won numerous championships and races, including further wins for "privateer" teams at Le Mans in 2004 and 2005.
The R8 is powered by a 3.6 L Audi V8 with Fuel Stratified Injection (FSI), which is a variation on the concept of gasoline direct injection developed by VW; it maximizes both power and fuel economy at the same time. FSI technology can be found in products available to the public, across all brands in the Volkswagen Group.
The power supplied by the R8, officially listed at about 610hp (455kW) in 2000, 2001, and 2002, 550hp (410.1kW) in 2003 and 2004, and 520hp (388kW) in 2005, is sent to the rear wheels via a Ricardo six-speed sequential transmission with an electropneumatic paddle shift. Unofficially, the works team Audi R8 for Le Mans (2000, 2001, and 2002) is said to have had around 670hp (500kW) instead of the quoted 610 hp. The numbers were quoted at speed, and were due to the car making 50 extra horsepower due to twin ram-air intakes at speeds over 150mph (240km/h). Official torque numbers were quoted for this version of the engine at 516lb⋅ft (700N⋅m) at 6500 rpm. The equation for horsepower (torque divided by 5250, multiplied by rpm) for these numbers produces a horsepower rating of 638 horsepower (476kW) at the same 6500 rpm (516/5250*6500=638). The Audi R8's structure was designed from the beginning to expedite parts changes during the race. The car's chassis has been likened to a Lego model — anything on the car can be changed and changed quickly. During its campaign, the Joest pit crew was able to change the entire rear transaxle of a damaged R8 — a process which usually takes between one and three hours — in as low as three minutes and 16 seconds.[3] The reason for this was that the transmission, rear suspension, and rear subframe were built as one unit. The car had numerous quick-connect hoses and easily removable bolts. The whole rear section of the car could be removed as a whole and a new back half installed with the help of a crane. The Automobile Club de l'Ouest (ACO), organizers of the 24 Hours of Le Mans and the American Le Mans Series, acted quickly to void this advantage by mandating the gearbox casing be the same item through the duration of the race, with only the internals being allowed to be changed. However, the R8 still had quicker access to the gearbox internals than any other car due to its quick-change construction . This was critical as the gearbox was the weak link in the car.
The R8's structure and body are both composed of carbon fibre, a strong, lightweight polymer material.
Performance from top speed to acceleration was, as in most race car cases, variable depending on the car's setup. The highest speed of the R8 at Le Mans was 338km/h (210mph) in the practice sessions of the 2002 Le Mans 24 Hours Race. A low downforce setup could reach about 350km/h (217mph).
Audi Sport's program saw tragedy in 2001 when on April 25, popular ex-F1 driver Michele Alboreto died in an accident after suffering a high-speed tyre failure during an R8 test session at the Lausitzring in eastern Germany.[4]
2003: Bentley breaks the streak
The Bentley Speed 8, which was somewhat based on the R8 ran at Le Mans from 2001 to 2003, winning in 2003, used a heavily modified 4.0-L version of the V8 engine from the Audi R8 .[citation needed] The Bentley racing effort was campaigned by Team Bentley (Apex Motorsport) with assistance from longtime R8 competitor Joest Racing and Audi Sport UK. After 2002, the Joest factory team dropped its R8 campaign and left it to the privateers. Restrictor changes brought the power down to 550bhp for anyone still racing with the R8, but the maximum torque hardly changed. Tom Kristensen, who won the previous three 24 Hours of Le Mans races in an R8, was assigned to drive the Bentley Speed 8, and helped guide the team to victory. (Kristensen went on to win the 2004 and 2005 races in an Audi R8). Some similarity exists between the Bentley Speed 8 and the Audi R8's successor, the R10 TDI.
2005: End of active competition
During the 2005 season, its time at the front of the pack evidently was drawing to a close. Audi had made the development of the Audi R10 TDI diesel public, and cars from other manufacturers and teams started to catch up in terms of on-the-track speed. The ACO still felt that the R8 needed to be kept in check, so they reduced the restrictor size on the R8's engine, due to the car not meeting new hybrid regulations, and stipulated the car shall carry ballast weight in an attempt to make the races more competitive. The R8 was restricted even further to only 520bhp. At the 2005 Le Mans, the Audis failed to qualify on pole position; the fastest R8 started the race in third position. However, the car was able to outlast all other competitors to eventually take its fifth checkered flag at the Circuit de la Sarthe and the 24 Hours of Le Mans. This victory was also notable since it was Tom Kristensen's sixth straight 24 Hours of Le Mans victory, and a record seventh overall, beating legendary driver Jacky Ickx's previous record of six career 24 Hours of Le Mans victories. To date, the R8 remains one of the fastest petrol-powered LMPs, setting a 3:29 at Le Mans, which was beaten only by the Lola-Aston Martins. However, the R8's best finish was at 379 laps, which is more than the Lola-Aston Martin's best at 373 laps.
In response to the new level of competition, Audi developed a successor known as the Audi R10 TDI. The V12 enginedturbodiesel won at its race debut at the 2006 12 Hours of Sebring with both cars starting on the front row. However, the pole-sitting R10 had to start from the pit lane due to the need to rectify heat exchanger issues.
Emanuele Pirro, Frank Biela, and Marco Werner made history by becoming the first drivers to win the Le Mans 24-hour race in a diesel-powered car. The Audi R10 TDI completed a record 380 laps of the La Sarthe circuit, with Pirro at the wheel for the finish. French trio Sébastien Loeb, Éric Hélary, and Franck Montagny took second in the Pescarolo Judd No 17, four laps back. Scotsman Allan McNish was third in the other Audi, which came in 13 laps down after suffering mechanical problems.
Audi R8 road car at the 2006 Paris Motor Show
The R8 continued to campaign the American Le Mans Series through the first half of the 2006 season, and made its final US appearance on July 1, 2006, at Lime Rock Park, Connecticut, piloted by McNish and Capello. The R8 ended its career in style by winning the race, marking the 50th American Le Mans Series victory for the Audi R8. The R10s participated in the rest of the ALMS season, beginning with the race at Miller Motorsports Park, Utah.
Tom Kristensen is a Danish former racing driver. He holds the record for the most wins at the 24 Hours of Le Mans with nine, six of which were consecutive. In 1997, he won the race with the Joest Racing team, driving a Tom Walkinshaw Racing-designed and Porsche-powered WSC95, after being a late inclusion in the team following Davy Jones' accident that eventually ruled him out of the race. All of his subsequent wins came driving an Audi prototype, except in 2003, when he drove a Bentley prototype. In both 1999 and 2007 Kristensen's team crashed out of comfortable leads in the closing hours of the race. He is considered by many to be the greatest driver ever to have raced in the 24 Hours of Le Mans.
Frank Stanley Biela is a German auto racing driver, mainly competing in touring cars and sportscar racing. He has raced exclusively in cars manufactured by the Audi marque since 1990.
The Bentley Speed 8 was an Autosport Award Winning Le Mans Prototype race car that was designed by Peter Elleray. The EXP Speed 8 debuted in the 24 Hours of Le Mans in 2001 and won the race in 2003. It has a strong resemblance to and shares some technology with the Audi R8C, which had raced only once before Audi dropped the project to focus on the later dominant Audi R8. The EXP Speed 8 marked Bentley's return to racing after a 73-year absence.
The BMW V12 LMR is a Le Mans Prototype built for sports car racing from 1999 to 2000. The car was built through an alliance between BMW Motorsport and Williams F1, and was the successor to the failed BMW V12 LM of 1998. It is famous for earning BMW its only overall victory to date at the 24 Hours of Le Mans.
The 2006 24 Hours of Le Mans was the 74th Grand Prix of Endurance, and took place over 17–18 June 2006. The winners of the race were Frank Biela, Marco Werner, and Emanuele Pirro, driving the Audi R10 TDI. For the first time in the history of the race, the winner was a diesel-powered car.
The 2003 24 Hours of Le Mans was a non-championship 24-hour automobile endurance race from 14 to 15 June 2003 at the Circuit de la Sarthe near Le Mans, France for teams of three drivers each entering Le Mans Prototype and Grand Touring cars before approximately 220,000 people. It was the race's 71st edition, as organised by the automotive group, the Automobile Club de l'Ouest (ACO) since 1923. A test day was held seven weeks prior to the race on 4 May.
The 2002 24 Hours of Le Mans was an automobile endurance race held for Le Mans Prototype and Grand Touring cars from 15 to 16 June 2002 at the Circuit de la Sarthe, close by Le Mans, France. It was the 70th running of the event, as organized by the automotive group, the Automobile Club de l'Ouest (ACO) since 1923. A test day was held five weeks prior to the race on 5 May. The No. 1 Audi Sport Team Joest car of Tom Kristensen, Frank Biela and Emanuele Pirro won the race overall and Audi's third consecutive victory in Le Mans, extending back to the 2000 event.
The 1999 24 Hours of Le Mans was the 67th 24 Hours of Le Mans, and took place on 12 and 13 June 1999. The race had a large number of entries in the fastest Le Mans Prototype classes, with Audi, BMW, Ferrari, Lola Cars, Mercedes-Benz, Nissan, Panoz, Riley & Scott, and Toyota all represented.
The Toyota GT-One is a racing car initially developed for Group GT1 rules, but later adapted into an LMGTP car. It raced in the 1998 and 1999 24 Hours of Le Mans.
Joest Racing is a sports car racing team that was established in 1978 by former Porsche works racer Reinhold Joest. Their headquarters are in Wald-Michelbach, Germany.
The Audi R8C is a Le Mans Prototype racecar that was built by Audi and designed by Peter Elleray to compete in the 1999 24 Hours of Le Mans under the LMGTP category. It was developed alongside the open Audi R8R LMP category spyder, prior to being replaced by the all-new Audi R8 in 2000.
The Audi R8R was a Le Mans Prototype built by Audi for the 1999 24 Hours of Le Mans, and a predecessor to the dominant Audi R8 which debuted in 2000. It was raced alongside the British built closed-cockpit Audi R8C.
The Panoz LMP-1 Roadster-S was a Le Mans Prototype built for Panoz in 1999. The car was a successor to the Esperante GTR-1 which had competed in the Grand Tourer categories internationally. Following competition in the American Le Mans Series and at the 24 Hours of Le Mans until 2001, the car was replaced by the Panoz LMP07.
The 2000 globemegawheels.com Grand Prix of Mosport was an American Le Mans Series professional sports car race held at Mosport International Raceway near Bowmanville, Ontario, Canada from August 4 to the 6, 2000. It was the sixth round of the 2000 American Le Mans Series season and the 15th IMSA / Professional SportsCar Racing sanctioned sports car race held at the facility.
The Audi R15 TDI, commonly abbreviated to the R15, is a Le Mans Prototype (LMP) racing car constructed by the German car manufacturer Audi AG. It is the successor to the Audi R10 TDI.
The Audi R10 TDI is a sports prototype designed and built by Audi in partnership with Dallara. Built to the Le Mans Prototype 1 (LMP1) regulations, the R10 was highly successful throughout its career; the R10 became the first diesel-powered car to win the 24 Hours of Le Mans in 2006, in what would be the first of three 24 Hours of Le Mans wins. Unveiled to the public on 13 December 2005 in Paris, the R10 would go on to win the 2006 24 Hours of Le Mans just 200 days later.
Champion Racing was a sports car racing team based in Pompano Beach, Florida, USA. Founded in 1994 by Dave Maraj, a former rally driver from Trinidad, as the motorsport wing of the Champion Motors car dealership, the team has campaigned various Porsches and Audis in North American road racing series. Champion Racing's extensive record includes a win at the prestigious 24 Hours of Le Mans in 2005, and 5 straight American Le Mans Series LMP1 championships, 2 as a private team and 3 as a factory team under the name Audi Sport North America.
Rinaldo "Dindo" Capello is an Italian professional racing driver. He is a three-time winner of the 24 Hours of Le Mans, with Bentley in 2003 and Audi in 2004 and 2008. Capello is a two-time American Le Mans Series champion, a five-time 12 Hours of Sebring winner, and the record holder for most wins at Petit Le Mans, having won five times. Capello has also raced in the Intercontinental Le Mans Cup, the FIA World Endurance Championship, DTM and the Italian GT Championship.
The Audi/Bentley 90° twin-turbocharged V8 racing engine is a 3.6-liter and 4.0-liter, twin-turbocharged, four-stroke, 90-degree, V8 racing engine, used in the Audi R8C, Audi R8R, Audi R8 and Bentley Speed 8 Le Mans Prototype race cars, between 1999 and 2005.
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