His father , Bill Seebold , Jr. enjoyed a 46 - year racing career that included 69 world and national championships and more than 900 race victories .
Tim 's grandfather , Bill Seebold , Sr. , began racing in 1939 .
grandfather 's father Bill Seebold   Seebold , Jr. enjoyed a 46 - year racing career that included 69 world and national championships and more than 900 race victories .
Tim 's grandfather , Bill Seebold , Sr. , began racing in 1939 .