IROC XIII
IROC XIII was the thirteenth year of IROC competition, which took place in 1989. it saw the use of the Chevrolet Camaro in all races for the final year, and continued the format introduced in IROC VIII. Race one took place on the Daytona International Speedway, race two took place at Nazareth Speedway, race three ran at Michigan International Speedway, and race four concluded the year at Watkins Glen International. Terry Labonte won the series championship and $204,900.
The roster of drivers and final points standings were as follows:
| Rank | Driver | Points | Winnings | Series | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 |  Race resultsRace One, Daytona International SpeedwayFriday, February 17, 1989
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font color|white|dark blue|Dark Blue