Career
Mayhew joined Richard Childress Racing as a development driver in 2007, competing in the K&North Pro Series West for Golden Gate Racing through the 2008 season. He was released from the team at the end of the year, and replaced by Blake Koch. In 2010 Mayhew also made his debut in the National Association of Stock Car Auto Racing Camping World Truck Series, driving Kevin Harvick Incorporated equipment operated by McGowen.
He ran a limited schedule in the series in that year and in 2011, winning a pole at Iowa Speedway in the latter year.
Two of Mayhew"s 2011 races were driven for KHI itself. In both races he finished third, his best career finish in the series.
He also competed in one Nationwide Series race for KHI in 2011, finishing 10th in his first start in the series. Also in 2011, Mayhew qualified the Number.
Returning to the K&North Pro Series West in 2012 after running a limited schedule in the series in 2011, Mayhew led all 50 laps of the opening race of the 2012 season at Phoenix International Raceway.
He scored top 10 finishes in each of the season"s first seven races. In June, he was signed by Philosophy Parsons Racing to race the Number. 98 Sprint Cup car in the 2012 Toyota/Save Mart 350 at Infineon Raceway.
Mayhew finished 40th in the event.
Mayhew was also asked by Kevin Harvick to stand by as a substitute driver during the summer of 2012, on call to replace Harvick in the Number. In the fall of the year he competed for Brad Keselowski Racing in four races in the Camping World Truck Series.
In 2014, Mayhew substituted for J. J. Yeley in the Number.
