His best Busch Series start was 26th and best finish was 7th in the Meijer 300 presented by Oreo race at Kentucky Speedway. Named the permanent driver of the #47 car in 2008, Bires had six top-ten finishes en route to a 13th-place points finish. But with Clorox/Kingsford moving up with Marcos Ambrose to the Sprint Cup Series, he was left without a full-time ride at the end of the season due to lack of sponsorship.
Bires achieved his peak Busch Series start at 26th place and his best finish at seventh in the Meijer 300 race. In 2008, he became the permanent driver of the #47 car with six top-ten finishes, securing a 13th-place points position. However, Clorox/Kingsford's transition to the Sprint Cup Series and Marcos Ambrose's advancement resulted in Bires losing his full-time driving opportunity at season's end due to insufficient sponsorship.