He started racing in the early 1970s in Formula Ford and later became known for racing in the Clubmans formula for front-engined sports cars, before moving into Touring Cars in the 1980s. As a successful BMW dealer with a chain of dealerships it was natural that he should gravitate towards their products, however he started his BTCC career driving for Tom Walkinshaw's TWR team, which was running the Rover SD1 Vitesse. However, Sytner and Walkinshaw fell out and Frank abruptly left the team halfway through his first season. Sytner joined the BMW team, fielding the 635 model run by Ted Grace Racing. It was Sytner who protested the legality of the TWR Rovers in 1983, an action which eventually cost Steve Soper the championship that season. Sytner entered a semi-works BMW 635 in 1984, running under the Sytner Racing banner and finished second in class to Andy Rouse.