1954 Carrera Panamericana In the fifth and final Carrera Panamericana from 19th to 23rd November 1954 in Mexico, Hans Herrmann (left), driving in the Porsche 550 Spyder, took 3rd place in the overall classification and won in the sports car class up to 1500 cm3. 550 Spyder (1954): air-cooled 4-cyl. boxer engine, 1498 cm3, 550 kg, 110 HP
1955 Mille Miglia Porsche sports cars notched up three great class wins on 1st May 1955. In 550 Spyders, Wolfgang Seidel and Helm Glöckler were victors in the sports car class up to 1500 cm3. 550 Spyder (1955): air-cooled 4-cyl. boxer engine, 1498 cm3, 110 HP, 590 kg
1956 Targa Florio Porsche won its first overall victory in a major international race in the Targa Florio on 10th June 1956. In his 550 A Spyder, Umberto Maglioli won out against strong international competition. 550 A Spyder: air-cooled 4-cyl. boxer engine, 1498 cm3, 135 HP, 550 kg
1957 German Grand Prix On 4th August, Edgar Barth, new to the Porsche team in 1957, won the formula II race in the Nürburgring which was started at the same time as the formula I race. With his 2-seater 550 A Spyder, he was faster than the competition in the single-seaters. 550 A Spyder: air-cooled 4-cyl. boxer engine, 1498 cm3, 135 HP, 550 kg