2020 Porsche 911 Speedster (991 II) Dimensions, Size & Specs

The curb weight of the 911 Speedster (991 II) is 1465 kg (3,230 lbs), which reflects the car’s lightweight engineering focus for enhanced performance. The maximum permissible weight, inclusive of passengers and cargo, is 1793 kg (3,953 lbs). This weight balance contributes to the car’s dynamic driving experience while maintaining structural integrity.

With mirrors fully opened, the width of the 911 Speedster (991 II) extends to 1978 mm (77.9 inches). This width is important when parking in tight spaces or navigating narrow streets, as the mirrors add nearly 13 cm (5.1 inches) to the width. Drivers should be mindful of this dimension to avoid contact with nearby objects or vehicles.

The Porsche 911 Speedster measures 4562 mm in length, 1852 mm in width (without mirrors), and 1250 mm in height. Most standard garages typically measure at least 2.4 meters (8 feet) wide and 4.8 meters (16 feet) deep, so the 911 Speedster should comfortably fit inside. Be sure to consider mirror clearance since their width extends to nearly 2 meters when opened.

When the rear seats are folded, the Porsche 911 Speedster (991 II) offers a luggage capacity of 125 liters (approximately 4.4 cubic feet). This space is relatively modest, as expected from a roadster built with a focus on performance and sportiness rather than cargo volume. It's sufficient for small bags or weekend essentials.

The Porsche 911 Speedster is equipped with 9J x 20 rims at the front and 12J x 20 rims at the rear, paired with 245/35 ZR20 91Y tires in front and wider 305/30 ZR20 103XL tires at the rear. These large rims and wide tires enhance grip, stability, and cornering performance. The staggered setup helps balance handling dynamics, giving the car sharp responsiveness on both road and track.

Compared to the predecessor 911 Speedster (991 I), which was produced between 2010 and 2011, the 991 II Speedster is slightly larger and lighter. The 991 II measures 4562 mm long versus the 991 I's approximate length of 4450 mm to 4480 mm, and has a curb weight around 1465 kg, which is generally lighter due to increased use of lightweight materials. These improvements translate into enhanced handling agility and better on-road performance.

The Porsche 911 Speedster (991 II) stands out in its class thanks to a compact, lightweight roadster design with a 4562 mm length and narrow 1852 mm width. Compared to rivals like the Audi R8 Spyder or Mercedes-AMG GT Roadster, the 911 Speedster is generally smaller and lighter, offering razor-sharp handling and a more focused driving experience. Its smaller dimensions and lower weight make it particularly agile, ideal for drivers seeking a pure sports car feel.

At 1250 mm (49.2 inches) tall, the Porsche 911 Speedster (991 II) features a low-slung profile that plays a crucial role in its aerodynamics and center of gravity. A lower height reduces air resistance and enhances stability at high speeds, which benefits both performance and fuel efficiency. The low profile also contributes to the car’s iconic sleek aesthetic and sporty roadster appearance.

The compact dimensions of the 911 Speedster (4562 mm length, 1852 mm width, and 1250 mm height) mean that interior space is understandably tight. As a two-seat roadster, it prioritizes driver and passenger engagement over roomy comfort. While the cabin is ergonomically designed for a snug fit, taller occupants may find headroom or shoulder room somewhat limited due to the low roofline and sporty cockpit. The minimal luggage capacity also reflects its focus on driving pleasure over practicality.