Tags: Motorsport Season.
The fifteenth year of IROC competition took place in 1991. IROC XV was the second year the Dodge Daytona was used in competition and continued the format introduced in IROC VIII. Race one took place on the Daytona International Speedway race two took place at Talladega Superspeedway race three ran at Michigan International Speedway and the year finished at Watkins Glen International.
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