Byars began his racing career in the mid-1940s. By 1944, Byars was assisting his father in refereeing and time keeping for motorcycle races. Byars earned his Expert license, #63, through the
American Motorcycle Association early in his racing career, during the heyday of Flat Track and TT Steeplechase dirt racing, riding alongside Caroll Resweber,
Joe Leonard and
Bobby Hill. Byars started attending Harley Davidson schools for mechanics when he was about 17 years old. When the new Harley Davidson K model was introduced, Byars, being a factory-sponsored Harley rider, was issued one of the new models. He was one of the first six riders to be issued the new K model in 1951 before it was released on the market in 1952. Byars raced in numerous events and won several state and national titles, such as the Southwestern Championship, the Texas State Championship, and the Milwaukee National 5-mile race. Byars became known as the "Beaumont Hornet" after winning the Texas State Championship of the Houston Hornets. After winning the Southwest flat track motorcycle title in Houston, Byars respectively became the "Man to Beat". Byars was ranked among the most popular men riders in the United States, rated top in numerous articles nationwide. If he was not winning the race, he was placing in the top 5 most of the time. He was unceasingly racing throughout the nation in state and national events and constantly making news. Such events included: Nashville, Tennessee; Shreveport, Louisiana;
Sturgis, South Dakota; Springfield, Illinois; and Daytona Beach, Florida. By 1957, Byars' Harley Davidson dealership required his undivided attention. Although his racing career ended, he continued in the racing industry by mentoring both of his sons, Tommy Byars,Jr. and Robert "Bubba" Byars, in
road racing,
drag racing and flat track racing in the 1970s. ==Business career==