1990 Michigan 500

Between 1981 and 1989, the Michigan 500 was part of IndyCar racing's Triple Crown of 500 mile races. It existed as the "middle jewel" of IndyCar's three "crown jewel" races: the Indianapolis 500, Michigan 500, and Pocono 500. However, following the 1989 season, Pocono Raceway chose to cancel their IndyCar race moving forward, citing decreased interest from fans in Indycar racing.{{cite news |url=https://www.newspapers.com/clip/21182054/the-indianapolis-star/ |work=Indianapolis Star |location=(Indiana) |agency=Associated Press |title=CART, Pocono; A Bitter Divorce |date=September 17, 1989 |page=31}} This ultimately ended IndyCar's Triple Crown aspect of their schedule and left Indianapolis and Michigan as the only two 500 mile races.

Like at Pocono, the crowd for the Michigan 500 had shrunk in recent years as well, from the peak in 1986 at 80,000 spectators,{{cite news |url=https://www.newspapers.com/article/the-dispatch-1986-michigan-500-rutherfor/127468347/ |work=The Dispatch |location=(Illinois) |agency=Associated Press |title=Michigan 500 Win to Rutherford |date=August 3, 1986 |page=22}} to only 55,000 in 1989.{{cite news |url=https://www.newspapers.com/article/the-indianapolis-star-1989-michigan-500/127447910/ |work=Indianapolis Star |location=(Indiana) |agency=Associated Press |title=Michael Earns Second Victory at Michigan |date=August 7, 1989 |page=15}} By comparison, the August NASCAR race at the track two weeks after the Michigan 500 attracted 80,000 spectators.{{cite news |url=https://www.newspapers.com/article/press-and-sun-bulletin-1989-nascar-michi/127468523/ |work=Press and Sun Bulletin |location=(New York) |agency=Associated Press |title=Wallace Dominates in Second Straight NASCAR Win |date=August 21, 1989 |page=10}}

Arie Luyendyk won the 1990 Indianapolis 500.

For the third straight year, Marlboro offered the Marlboro Million, offering a one million dollar prize should a driver win the Marlboro Grand Prix at the Meadowlands, the Marlboro 500 at Michigan, and the Marlboro Challenge.{{cite news |url=https://www.newspapers.com/article/the-indianapolis-star-1988-marlboro-mill/127389547/ |work=Indianapolis Star |location=(Indiana) |agency=Associated Press |title=Marlboro To Award Big Bonus |date=July 20, 1988 |page=18}} Three weeks before the Marlboro 500, Michael Andretti won the Marlboro Grand Prix and entered Michigan still eligible for the Marlboro Million.

Thursday's opening practice session was marked by high speeds and two crashes. Rick Mears posted the fastest speed at 221.682 mph. Al Unser Jr. was second fastest at 221.511 mph, followed by Emerson Fittipaldi at 221.426 mph.{{cite news |url=https://www.newspapers.com/article/battle-creek-enquirer-1990-michigan-500/127469532/ |work=Battle Creek Enquirer |location=(Michigan) |agency=Associated Press |title=Speeds Signal MIS Records in Jeopardy |date=August 3, 1990 |page=11}}

Driving for Patrick Racing, 51 year-old Al Unser experienced a mechanical failure and crashed straight into the third turn wall with the right side of the car. Unser suffered a broken right femur, right collarbone, and three upper right ribs.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-pra/127469407/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Unser Sr: Broken Leg, Collarbone |date=August 3, 1990 |page=33}} The accident occurred after only six practice laps.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-pra/127469366/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Unser Sr: Broken Leg, Collarbone |date=August 3, 1990 |page=37}} Later that afternoon, Unser was flown to Methodist Hospital in Indianapolis for surgery.{{cite news |url=https://www.newspapers.com/article/battle-creek-enquirer-1990-michigan-500/127469532/ |work=Battle Creek Enquirer |location=(Michigan) |agency=Associated Press |title=Speeds Signal MIS Records in Jeopardy |date=August 3, 1990 |page=11}} After investigating the car, Unser's crew discovered a broken right-front push rod was the cause of the accident.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-practic/127469600/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Patrick's Gamble Down to Last Chassis |date=August 4, 1990 |page=21}}

Tero Palmroth hit the turn four wall. Unable to repair the car, his team withdrew from the race. Salt Walther crashed in turn two after blowing an engine and Arie Luyendyk crashed after running over debris from Walther's accident.{{cite news |url=https://www.newspapers.com/article/battle-creek-enquirer-1990-michigan-500/127469532/ |work=Battle Creek Enquirer |location=(Michigan) |agency=Associated Press |title=Speeds Signal MIS Records in Jeopardy |date=August 3, 1990 |page=11}} Luyendyk went to a backup car while Walther was forced to withdraw from the race.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-pra/127469366/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Unser Sr: Broken Leg, Collarbone |date=August 3, 1990 |page=37}}

On Friday, Emerson Fittipaldi won the pole with a speed of 222.593 mph. Bobby Rahal qualified second at 221.859 mph. Danny Sullivan completed the front row with a speed of 221.764 mph.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-practic/127469600/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Fittipaldi Scorches Field |date=August 4, 1990 |page=21}}

In a practice session on Friday afternoon following qualifying, Emerson Fittipaldi experienced a fire while refueling on pit road. Three crewmen suffered burns and were treated at the track infield hospital.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-practic/127469600/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Fittipaldi Scorches Field |date=August 4, 1990 |page=21}}{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-qua/127469671/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Fittipaldi Unhurt in Fire, Wins Pole for 500 at MIS |date=August 4, 1990 |page=23}}

22 cars had qualified for the race on Friday. Saturday's second round of qualifying was cancelled due to rain. Six additional cars were added to the field, with the order set by random draw. Of those, Walther and Palmroth withdrew due to a lack of backup cars.{{cite news |url=https://www.newspapers.com/article/the-vincennes-sun-commercial-1990-michig/127481219/ |work=Vincennes Sun-Commercial |location=(Indiana) |agency=Associated Press |title=Drivers Set for Blistering Pace |date=August 5, 1990 |page=16}}

On Sunday morning, the International Race of Champions competed at Michigan. Dale Earnhardt won the 100 mile event. Al Unser Jr., Bobby Rahal, Emerson Fittipaldi, and Danny Sullivan competed in the IROC race and then in the Michigan 500.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-rec/127490251/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Earnhardt Wins IROC Race, Title Going Away |date=August 6, 1990 |page=20}}

An estimated 55,000 spectators filled the stands to watch the Michigan 500.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-rec/127490201/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Unser, Teammate Rahal Finish 1-2 in MIS Sizzler |date=August 6, 1990 |page=15}}

At the start of the race, Emerson Fittipaldi drove off to a commanding lead. Arie Luyendyk was the only challenge for Fittipaldi, with Luyendyk leading for 15 laps. On lap 140, Luyendyk blew an engine and brought out the caution.

Fittipaldi led 134 of the first 150 laps.{{cite web |url=https://www.champcarstats.com/races/199010.htm |title = 1990 Marlboro 500 Results}} Shortly after the restart for Luyendyk's engine failure, Al Unser Jr. passed Fittipaldi for the lead on lap 151. Four laps later, Fittipaldi's engine blew and brought out another caution.

Fittipaldi's retirement left Unser Jr. and his teammate Bobby Rahal in control of the event. Rahal took the lead on lap 170 and led for the next 42 circuits. Michael Andretti, the only other car remaining on the lead lap, blew an engine on lap 200 and brought out a caution. After a brief restart, Rick Mears blew an engine in turn two.

After the caution for Mears' engine, Rahal and Unser Jr. staged a classic duel. Unser took the lead on the restart and Rahal took it back. Unser retook the lead and Rahal regained the lead a lap later. Rahal extended his lead to nearly two seconds before he made his final pit stop under green flag conditions on lap 235.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-rec/127490251/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Unser Jr Wins Fastest 500 Miler |date=August 6, 1990 |page=20}}

Unser remained on track after Rahal made his final pit stop and put Rahal a lap down. On lap 240, Jon Beekhuis blew an engine and brought out the caution. This allowed Unser to pit under caution and maintain his large lead over Rahal. The race restarted with seven laps remaining, with Rahal at the tail end of the lead lap and Unser behind him.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-rec/127490251/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Unser Jr Wins Fastest 500 Miler |date=August 6, 1990 |page=20}}

Unser won the Marlboro 500 by 25.459 seconds over Rahal. He earned $172,684. There were eight cautions for 39 laps. With an average speed of 189.727 mph, the race was the fastest 500-mile race in history at the time. The previous fastest 500-mile Indy car race was in that year's Indianapolis 500 when Arie Luyendyk won with an average speed of 185.981 mph.{{cite news |url=https://www.newspapers.com/article/detroit-free-press-1990-michigan-500-rec/127490201/ |work=Detroit Free Press |location=(Michigan) |agency=Associated Press |title=Little Al Wins Fastest 500 Miler |date=August 6, 1990 |page=15}}

• {{flagicon|FIN}} Tero Palmroth (#10) – Withdrawn
• {{flagicon|USA}} Al Unser (#40) – Withdrawn, driver injury
• {{flagicon|USA}} Salt Walther (#77) – Withdrawn

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The Michigan 500 was broadcast live on television by ABC. Paul Page was the lead announcer and was joined by Bobby Unser and Sam Posey as color commentators.1990 Michigan 500 Telecast: ABC-TV, August 5, 1990

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Michigan 500

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Category:Motorsport in Michigan

Category:Motorsport competitions in the United States

Category:Michigan Indy 400