2020 Alpina B5 Sedan (G30, facelift 2020) Dimensions, Size & Specs

With the side mirrors opened, the Alpina B5 Sedan spans a width of 2126 mm (83.7 inches). This measurement is important for parking and maneuvering in tight spaces, showing that while the car is wider than average with mirrors out, it maintains manageable proportions for standard roads and garages.

The Alpina B5 Sedan has a curb weight of 2055 kg (4533 lbs), which represents the weight of the vehicle with standard equipment, fluids, and a full tank of fuel but without passengers or cargo. Its maximum permissible weight is 2520 kg (5556 lbs), indicating the total allowable weight when fully loaded including passengers and luggage.

The luggage capacity of this Alpina B5 is 530 liters (18.7 cubic feet), which is generous for an executive sedan. This volume allows for ample storage space for daily use, longer trips, or airport runs. Compared to other vehicles in the same segment, the B5 offers competitive cargo space without sacrificing interior comfort.

Yes, the Alpina B5 Sedan fits well within a standard residential garage. A typical home garage door width ranges from 2400 mm to 3000 mm (94.5 to 118 inches), and the B5’s width including mirrors is 2126 mm (83.7 inches). Its length of 4978 mm (195.9 inches) is also manageable for most garages that generally accommodate cars up to 6 meters in length.

The Alpina B5 rides on 20-inch rims sized 10J x 20 in the front and 8.5J x 20 in the rear, paired with wide tires—295/30 ZR20 front and 255/35 ZR20 rear. These wider tires contribute to the overall width and road grip, enhancing performance and stability but also influencing handling and parking due to the wide track.

Compared to the previous generation Alpina B5, the G30 facelift model is slightly larger and heavier, benefiting from advancements in chassis and technology integration. The increased length and width translate to better interior space and comfort, while the extra curb weight reflects enhanced equipment, safety features, and a robust powertrain enhancing performance and refinement.

Dimensionally, the Alpina B5 Sedan closely aligns with competitors such as the BMW M5 and Mercedes-AMG E63. Its length (4978 mm) and width (1868 mm) are similar to these rivals, while its curb weight is generally higher due to luxury and performance-focused equipment. The B5 balances size for spaciousness with sporty handling characteristics that are competitive in the executive sports sedan segment.

The Alpina B5 is equipped with front rims sized 10J x 20 and rear rims 8.5J x 20, fitted with 295/30 ZR20 tires at the front and 255/35 ZR20 at the rear. These wide, low-profile tires provide excellent grip and stability, contributing to the vehicle's sharp handling and cornering capabilities. The staggered setup ensures rear-wheel traction for performance driving, while also affecting ride comfort and road noise.

The Alpina B5 Sedan facelift features subtle yet distinct design elements that differentiate it from the standard BMW 5 Series. On the exterior, unique Alpina badging, multi-spoke alloy wheels, and exclusive paint options elevate its visual appeal. Inside, premium materials, bespoke Alpina instrumentation, and advanced infotainment systems create a luxurious and driver-focused atmosphere, blending performance with comfort seamlessly.