In 1955, the Ferrari 555 F1 "Supersqualo" was the revised version of the 553. At the front, it received coil springs instead of transverse leaf springs; at the rear, the leaf spring was now mounted on top instead of underneath, and the gearbox had five speeds instead of four. Displacement and power remained unchanged. Because of its elongated, rounded bodywork, it was nicknamed the "Supersqualo" (super shark). Its first outing was the Bordeaux Grand Prix on April 24, 1955; in 1956, Peter Collins still drove it while the rest of the Scuderia fielded the Lancia-Ferrari D50.
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