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|Known as the “Giant Killer,” the 550 was Porsche’s first foray into building cars specifically designed for racing. Actor James Dean bought and intended to race his 550 at Salinas in the fall of 1955 but died in a car accident shortly after completing filming of the movie “Giant”. The 550 with a Type 547 1.5-liter, flat-four, air-cooled engine produced a little more than 100 horsepower. One of the biggest steps forward was the space-frame tubular chassis which made it immensely lighter than its racing competition, as well as rigid and stable. This car set in motion Porsche’s racing prominence and helped build a reputation that sparked global sales. The 550 is nimble, agile, well-balanced, and quick even bone stock. It generates a feeling of confidence and glory when being pushed through corners. Even when pitted against heavier, larger displacement cars, you will find that bigger is not always better.|
— Official description 
The 1955 Porsche 550A Spyder - abbreviated as Porsche 550 and also known as Porsche 550 Spyder and abbreviated as Porsche 550 - is a mid-engined sports car by Porsche featured in Forza Motorsport, the Porsche Expansion Pack for Forza Motorsport 4, and in the Porsche Car Pack for Forza Horizon 3.
It also appears as standard in Forza Motorsport 7 and all subsequent titles.
Unlock in Forza Horizon 4
- The Trial reward - Series 22 Summer Season
Requires the Porsche Expansion Pack
Purchase from the car dealer for 600,000 CR
Performance & Body Style
Top Speed: 137.1 mph (220.6 km/h)
0-60 mph (0-97 km/h): 8.200 secs.
0-100 mph (0-161 km/h): 25.200 secs.
60-0 mph (97-0 km/h): 142.7 ft (43.5 m)
100-0 mph (161-0 km/h): 396.8 ft (120.9 m)
60 mph (97 km/h): 0.79 g
120 mph (193 km/h): 0.72 g
Requires the Porsche Car Pack
Purchase from the Autoshow for 600,000 CR or 1,200 T
Performance & Championship
Top Speed: 142.0 mph (228.5 km/h)
0-60 mph (0-97 km/h): 7.409 secs.
0-100 mph (0-161 km/h): 19.791 secs.
60-0 mph (97-0 km/h): 188.1 ft (57.3 m)
100-0 mph (161-0 km/h): 470.9 ft (143.5 m)
60 mph (97 km/h): 0.76 g
120 mph (193 km/h): 0.75 g
|Conversion - Engine|
|F6 - 911 '73|
2.0L F4 - Turbo
1.6L I4 - Turbo Rally
|2.0L F4 - Turbo|
2.0L F4 - Turbo Rally
|Conversion - Drivetrain|
|Conversion - Aspiration|
- The Porsche 550 Spyder is referred to as a 1956 model in Forza Motorsport.