Speed Society
speed-society.com
Focused primarily on racing topics such as drag, autocross, and road racing. Also covered are shows, automotive trends and the automotive aftermarket. Includes forums for general topics, current events, and news as well.
10 Tenths Motorsport
ten-tenths.com
Discussion forum on all aspects of motorsport from F1, Touring cars, Bikes, Kart to National and club racing.
Motorsport Forums
motorsportforums.com
Discussion of every form of racing.
Racing Message Boards
4m.net
Includes discussions on sprints, stock cars, midgets, enduros, karts, dwarfs, vintage racing and drag racing.
InTheZone Racing Forums
invisionfree.com
Includes forums for NASCAR, F1, IndyCar, CART, and off road dirt.