The2003American Le Mans Series season was the fifth season for theIMSA American Le Mans Series, and the 33rd overall season of the IMSA GT Championship. It was a series forLe Mans Prototypes (LMP) andGrand Touring (GT) race cars divided into 4 classes: LMP900, LMP675, GTS, and GT. It began March 15, 2003, and ended October 18, 2003, after nine races.
Dyson Racing's overall win at Sonoma Raceway was the first time in ALMS history that the overall win was captured by a vehicle not from the LMP900 class.
Little was changed between the 2002 and 2003 schedules; the Grand Prix of Washington, D.C., andMid-Ohio Sports Car Course did not return, but both were instead replaced by the return of the Grand Prix of Atlanta atRoad Atlanta. The Grand Prix of Mexico was originally scheduled for April 6 at theAutodromo Hermanos Rodriguez but was canceled due to financial issues.[1]
| Rnd | Race | Circuit | Date |
|---|---|---|---|
| 1 | Mobil 112 Hours of Sebring | Sebring International Raceway | March 15 |
| C | Grand Prix of Mexico | Autodromo Hermanos Rodriguez | April 6 |
| 2 | ChevyGrand Prix of Atlanta | Road Atlanta | June 29 |
| 3 | InfineonGrand Prix of Sonoma | Sonoma Raceway | July 27 |
| 4 | Le Grand Prix de Trois-Rivières | Circuit Trois-Rivières | August 3 |
| 5 | TorontoGrand Prix of Mosport | Mosport | August 17 |
| 6 | Road America 500 | Road America | August 24 |
| 7 | Fry's ElectronicsSports Car Championships | Mazda Raceway Laguna Seca | September 7 |
| 8 | Grand Prix Americas | Miami street circuit | September 27 |
| 9 | Petit Le Mans | Road Atlanta | October 18 |
| Sources:[2][3] | |||
| Team | Chassis | Engine | Tyre | No. | Drivers | Rnds. |
|---|---|---|---|---|---|---|
 RN Motorsports | DBA4 03S | Zytek ZG348 3.4 L V8 | D | 15 |  Hayanari Shimoda | 1 |
 John Nielsen | 1 | |||||
 Dyson Racing Team | MG-Lola EX257 | MG (AER) XP20 2.0 L Turbo I4 | G | 16 | James Weaver | All |
| Butch Leitzinger | All | |||||
| Andy Wallace | 1, 9 | |||||
| 20 | Chris Dyson | All | ||||
 Didier de Radiguès | 1, 9 | |||||
| Chad Block | 1, 9 | |||||
| Andy Wallace | 2–8 | |||||
| Marshall Cooke Racing | Lola B2K/40 | Ford (Millington) 2.0 L Turbo I4 | P | 18 | Ben Devlin | 1 |
| Jason Workman | 1 | |||||
 Melanie Paterson | 1 | |||||
| Essex Racing | Lola B2K/40 | Nissan (AER) VQL 3.0L V6 | P | 18 | Jason Workman | 2–9 |
| Melanie Paterson | 2, 4–5 | |||||
| David McEntee | 3 | |||||
| James Gue | 6 | |||||
| Scott Bradley | 7–9 | |||||
| Andrew Davis | 9 | |||||
| Intersport Racing | MG-Lola EX257 (1-8) Lola B01/60 (9) | MG (AER) XP20 2.0 L Turbo I4 (1-8) Judd KV675 3.4 L V8 (9) | G | 37 | Jon Field | All |
| Duncan Dayton | All | |||||
| Mike Durand | 1 | |||||
| Larry Connor | 9 | |||||
| Team Bucknum Racing | Pilbeam MP91 | Willman (JPX) 3.4 L V6 | D | 56 | Bryan Willman | All |
| Chris McMurry | All | |||||
| Jeff Bucknum | 1–8 | |||||
| Alan Rudolph | 9 | |||||
| Downing-Atlanta Inc. | WR LMP02 | Mazda R26B 2.6L 4-Rotor | D | 64 | Jim Downing | 2, 6, 9 |
| Howard Katz | 2, 6, 9 | |||||
| Yojiro Terada | 9 | |||||
| AB Motorsport | PilbeamMP84 | Nissan (AER) VQL 3.0L V6 | A | 77 | Joe Blacker | 2 |
| John Burke | 2 |
* Was on the entry list but did not participate in the event.
Overall winner inbold.
Points are awarded to the top 10 finishers in the following order:[5]
Exceptions being for the 12 Hours of Sebring and Petit Le Mans which award the top 10 finishers in the following order:[5]
Cars failing to complete 70% of the winner's distance are not awarded points. Teams only score the points of their highest finishing entry in each race.
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  InfineonTeam Joest | Audi R8 | Audi 3.6L Turbo V8 | 26 | 16 | 20 | 20 | 20 | 13 | 20 | 16 | 19 | 170 |
| 2 | ADTChampion Racing | Audi R8 | Audi 3.6L Turbo V8 | 22 | 20 | 16 | 16 | 10 | 20 | 13 | 20 | 26 | 163 |
| 3 | JML TeamPanoz | Panoz LMP01 Evo | Élan 6L8 6.0L V8 | 14 | 10 | 10 | 13 | 16 | 16 | 16 | 13 | 22 | 130 |
| 4 | American Spirit Racing | Riley & Scott Mk III C | Lincoln 5.0L V8 | 8 | 6 | 8 | 6 | 10 | 8 | 14 | 60 | ||
| 5 | Intersport Racing | Lola B2K/10 Riley & Scott Mk III C | Judd GV4 4.0L V10 Élan 6L8 6.0L V8 | 8 | 6 | 6 | 8 | 8 | 10 | 46 | |||
| 6 | DoranLista Racing | Dallara SP1 | Judd GV5 5.0L V10 | 10 | 13 | 13 | 36 | ||||||
| 7 | TeamBentley | Bentley Speed 8 | Bentley 4.0L Turbo V8 | 19 | 19 | ||||||||
| 8 | Audi Sport UK | Audi R8 | Audi 3.6L Turbo V8 | 12 | 12 | ||||||||
| 9 | Taurus Sports Racing | Lola B2K/10 | Judd GV4 4.0L V10 | 7 | 7 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Dyson Racing Team | MG-Lola EX257 | MG (AER) XP20 2.0L Turbo I4 | 26 | 16 | 20 | 20 | 20 | 20 | 20 | 22 | 164 | |
| 2 | Intersport Racing | MG-Lola EX257 Lola B01/60 | MG (AER) XP20 2.0L Turbo I4 Judd KV675 3.4L V8 | 22 | 20 | 20 | 10 | 13 | 10 | 26 | 121 | ||
| 3 | Essex Racing | Lola B2K/40 | Nissan (AER) VQL 3.0L V6 | 8 | 13 | 16 | 10 | 16 | 16 | 13 | 16 | 108 | |
| 4 | Downing-Atlanta Inc. | WR LMP-02 | Mazda 2.6L 4-Rotor | 10 | 13 | 19 | 42 | ||||||
| 5 | Jeff Bucknum Racing | Pilbeam MP91 | Willman 6 3.4L V6 | 16 | 8 | 24 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Corvette Racing | Chevrolet Corvette C5-R | Chevrolet 7.0L V8 | 26 | 20 | 20 | 20 | 20 | 16 | 16 | 10 | 19 | 167 |
| 2 | Prodrive | Ferrari 550-GTS Maranello | Ferrari 6.0L V12 | 22 | 16 | 13 | 10 | 16 | 20 | 20 | 20 | 26 | 163 |
| 3 |  TeamOlive Garden | Ferrari 550 Maranello | Ferrari 6.0L V12 | 8 | 8 | 13 | 10 | 10 | 10 | 13 | 72 | ||
| 4 | Carsport America | Dodge Viper GTS-R Pagani Zonda GR | Dodge 8.0L V10 Mercedes-AMG 6.3L V12 | 16 | 6 | 8 | 4 | 8 | 42 | ||||
| 5 | Konrad Motorsport | Saleen S7-R | Ford 7.0L V8 | 6 | 6 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Alex Job Racing | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 26 | 20 | 20 | 20 | 20 | 10 | 20 | 20 | 26 | 182 |
| 2 | Risi Competizione | Ferrari 360GT Modena | Ferrari 3.6L V8 | 13 | 16 | 16 | 16 | 16 | 19 | 96 | |||
| 3 | The Racer's Group | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 12 | 13 | 10 | 2 | 16 | 8 | 2 | 16 | 79 | |
| 4 | Petersen/White Lightning | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 22 | 8 | 20 | 13 | 10 | 73 | ||||
| 5 | J-3 Racing | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 10 | 6 | 13 | 6 | 2 | 14 | 51 | |||
| 6 | P.K. Sport | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 6 | 8 | 1 | 10 | 13 | 9 | 47 | |||
| 7 | ACEMCO Motorsports | Ferrari 360GT Modena | Ferrari 3.6L V8 | 8 | 10 | 3 | 3 | 4 | 3 | 10 | 41 | ||
| 8 | Orbit Racing | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 8 | 2 | 4 | 4 | 13 | 1 | 8 | 40 | ||
| 9 | JMB Racing USA | Ferrari 360GT Modena | Ferrari 3.6L V8 | 16 | 3 | 1 | 6 | 8 | 34 | ||||
| 10 | ZIP Racing | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 7 | 8 | 13 | 4 | 32 | |||||
| 11 | Seikel Motorsport | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 19 | 6 | 25 | |||||||
| 12 | Yokohama Advan | BMW M3 GTR | BMW 3.2L I6 | 12 | 12 | ||||||||
| 13 | DeWALT Racesport Salisbury | TVR Tuscan T400R | TVR Speed Six 4.0L I6 | 10 | 10 | ||||||||
| 14 | Inline Cunningham Racing | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 1 | 6 | 7 | |||||||
| 15 | Ferri Competizione | Ferrari 360GT Modena | Ferrari 3.6L V8 | 4 | 4 |
