1991 CART PPG Indy Car World Series explained
The 1991 CART PPG Indy Car World Series season was the 13th national championship season of American open wheel racing sanctioned by CART. The season consisted of 17 races, and one non-points exhibition event. Michael Andretti was the national champion, and the rookie of the year was his younger brother Jeff Andretti.
The 1991 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Rick Mears won the Indy 500, his record-tying fourth victory in the event.
Michael Andretti won a total of eight races, eight pole positions, and led more than half of the laps during the season, but the championship battle still went down to the final race of the season. Bobby Rahal won only one race, but had 11 podium finishes and 13 top tens. Rahal's consistent season put him in position to challenge Andretti for the title in the season finale at Laguna Seca. Andretti got off to a slow start to the season, dropping out of the first two races, and finished a heartbreaking second at Indianapolis. But after Indy, he shot to the top of the standings. He won four of the last five races of the season, and needed to finish 6th or better at Laguna Seca to clinch the title. When Bobby Rahal dropped out at Laguna Seca with overheating problems, Andretti cruised to the title.
Drivers and constructors
The following teams and drivers competed for the 1991 Indy Car World Series. All entrants used Goodyear tires.
Season Summary
Schedule
| Rd | Date | Race Name | Track | City |
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| 1 | March 17 |  Gold Coast IndyCar Grand Prix | Surfers Paradise Street Circuit | Surfers Paradise, Australia |
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| 2 | April 14 | Toyota Grand Prix of Long Beach | Long Beach Street Circuit | Long Beach, California |
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| 3 | April 21 | Valvoline 200 | Phoenix International Raceway | Phoenix, Arizona |
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| 4 | May 26 | Indianapolis 500 | Indianapolis Motor Speedway | Speedway, Indiana |
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| 5 | June 2 | Miller Genuine Draft 200, in Honor of Rex Mays | Milwaukee Mile | West Allis, Wisconsin |
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| 6 | June 16 | Valvoline Detroit Grand Prix | Streets of Detroit | Detroit, Michigan |
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| 7 | June 23 | Texaco/Havoline Presents the Budweiser/G. I.Joe's 200 | Portland International Raceway | Portland, Oregon |
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| 8 | July 8 | Budweiser Cleveland Grand Prix | Burke Lakefront Airport | Cleveland, Ohio |
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| 9 | July 14 | Marlboro Grand Prix | Meadowlands Street Circuit | East Rutherford, New Jersey |
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| 10 | July 21 |  Molson Indy Toronto | Exhibition Place | Toronto, Ontario, Canada |
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| 11 | August 4 | Marlboro 500 | Michigan International Speedway | Brooklyn, Michigan |
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| 12 | August 25 | Texaco/Havoline Grand Prix of Denver | Streets of Denver | Denver, Colorado |
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| 13 | September 1 | Molson Indy Vancouver | Streets of Vancouver | Vancouver, British Columbia |
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| 14 | September 15 | Pioneer Electronics 200 Presented by Budweiser | Mid-Ohio Sports Car Course | Lexington, Ohio |
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| 15 | September 22 | The Chicago Tribune Presents the Texaco/Havoline 200 | Road America | Elkhart Lake, Wisconsin |
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| 16 | October 6 | Bosch Spark Plug Grand Prix | Pennsylvania International Raceway | Lehigh Valley, Pennsylvania |
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| NC | October 19 | Marlboro Challenge | Laguna Seca Raceway | Monterey, California |
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| 17 | October 20 | Toyota Monterey Grand Prix Featuring the Champion Spark Plug 300 | Laguna Seca Raceway | Monterey, California | |
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Oval/Speedway
Road/Street course
Non-championship event
- Indianapolis was USAC-sanctioned but counted towards the PPG Indy Car title.
Race results
Final driver standings
See also: List of American Championship car racing point scoring systems.
| | Color | Result |
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| Gold | Winner | | Silver | 2nd place | | Bronze | 3rd place | | Green | 4th-6th place | | Light Blue | 7th-12th place | | Dark Blue | Finished
(Outside Top 12) | | Purple | Did not finish | | Red | Did not qualify
(DNQ) | | Brown | Withdrawn
(Wth) | | Black | Disqualified
(DSQ) | | White | Did not start
(DNS) | | Blank | Did not
participate
(DNP) | | Not competing | |
| | align=center colspan=2 | In-line notation |
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| Bold | Pole position | | Italics | Ran fastest race lap | *|align=center|Led most race laps|-|style="text-align:center"||align=center|Rookie of the Year|-|style="text-align:center"||align=center|Rookie|}|}|}Nations' Cup
- Top result per race counts towards Nations' Cup.
Chassis Constructors' Cup
Engine Manufacturers' Cup
References
See also
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