IROC XII

The twelfth year of IROC competition took place in 1988. IROC XII saw the use of the Chevrolet Camaro in all races, and continued the format introduced in IROC VIII. Race one took place on the Daytona International Speedway, race two took place at Riverside International Raceway, race three ran at Michigan International Speedway, and race four concluded the year at Watkins Glen International. Al Unser, Jr. won his second championship, and took home $211,900 for his efforts.

The roster of drivers and final points standings were as follows: