15. Kyle Busch ($50 million)
Kyle Busch hasn’t stopped breaking records since bursting onto the NASCAR scene in 2003, and he’s pocketed a comfortable $50 million in the process. At 19, he became the franchise’s youngest pole winner in history, but he didn’t stop there. No, he went on to achieve the most wins across the top three series in a season, claimed the highest ever number of Xfinity Series victories, and he led his self-titled motorsports team to the Camping World Truck Series in its first year.
14. Kurt Busch ($50 million)
Amassing the same $50 million fortune as his younger and arguably less volatile brother Kyle, Kurt Busch has also achieved his fair share of accolades since beginning his career in 2000. For instance, the 38-year-old has won 27 Sprint Cup races as well as the 2004 Cup Series Championship. Plus, in 2006 he achieved the rare feat of winning races in all three top NASCAR divisions.