[1][2][3][4][5][6] The C-4R was the successor to the C-2R, with which Briggs Cunningham had competed at Le Mans in 1951.
[7] Of all the racing cars built by Cunningham, the C-4R was the most successful.
The racing car type was driven for the first time in 1952 at the SCCA championship round in Bridgehampton.
Briggs Cunningham and Bill Spear finished the 1952 24 Hours of Le Mans in fourth place overall and celebrated victory in the class for racing cars with displacement over 5 liters.
[10] The most important and significant overall victory was the success of Fitch and Walters in the 12-hour race at Sebring in 1953, the first sports car world championship race in motorsport history.