Top Ten Results The Goodwrench 200 was held March 4 at North Carolina Motor Speedway.
Top Ten Results The Miller Classic was a 200 lap race held March 10 at Martinsville Speedway.
Top Ten Results The Mountain Dew 400 was held March 25 at Hickory Motor Speedway.
Top Ten Results The Roses Stores 200 was held June 10 at Orange County Speedway.
Top Ten Results The Granger Select 200 was held June 24 at Louisville Motor Speedway.
Top Ten Results The Firecracker 200 was held July 1 at Volusia County Speedway in Barberville, Florida.
Top Ten Results The Old Milwaukee 200 was held July 29 at New River Valley Speedway in Dublin, Virginia.
Top Ten Results The Kroger 200 was held August 5 at Indianapolis Raceway Park.
Top Ten Results The Texas Pete 200 was held August 12 at Orange County Speedway in Rougemont, North Carolina.
Top Ten Results The Jay Johnson 200 was held August 25 at Bristol Motor Speedway.
Top Ten Results The AC-Delco 200 was held October 21 at North Carolina Motor Speedway.
Top Ten Results The Winston Classic was a 200 lap race held October 29 at Martinsville Speedway.
Top Ten Results (key) Bold – Pole position awarded by time.
Kenny Wallace won the first Busch Series Rookie of the Year Award ever given, posting sixteen top-ten finishes and winning three poles.
Bobby Hamilton and Jeff Burton, both of whom would later go on to win the award in Winston Cup, finished second and third in the standings, respectively.
Dave Rezendes, Robert Pressley, and Brandon Baker were the only other full-time contenders, as Dave Simpson, Ed Ferree, and Tom Harrington only ran a limited schedule On September 30, 1990, less than 1 year after becoming champion, Rob Moroso was killed in an automobile crash near Mooresville, North Carolina, only hours after finishing 21st in the NASCAR Winston Cup Holly Farms 400 at North Wilkesboro Speedway.
The resulting collision killed both Moroso and Tammy Williams, the driver of the vehicle in the opposite lane.