2006 Alpina B6 Coupe (E63) Dimensions, Size & Specs

The curb weight of the Alpina B6 Coupe (E63) is 1720 kg (approximately 3794 lbs), which refers to the vehicle's weight without passengers or cargo but with essential fluids. The maximum permissible weight is 2190 kg (around 4829 lbs), indicating the total vehicle weight when fully loaded with passengers and cargo.

With the rear seats folded down, the Alpina B6 Coupe offers a luggage capacity of 450 liters (about 15.9 cubic feet). This expanded cargo space provides practicality alongside its sporty coupe design, allowing for flexible carrying options for longer trips or larger items.

The Alpina B6 Coupe (E63) comes equipped with staggered tire sizes to enhance handling and grip. The front tires measure 255/35 R20, while the rear tires are wider at 285/30 R20. These sizeable 20-inch wheels contribute to the car’s sporty stance and driving dynamics.

Given its dimensions — 4820 mm (189.8 inches) in length and 1855 mm (73.0 inches) in width — the Alpina B6 Coupe (E63) generally fits into a standard single-car garage, which typically ranges from about 2400 mm to 3000 mm (7.9 to 9.8 feet) in width and 4800 mm to 6000 mm (15.7 to 19.7 feet) in length. However, the width might be a tighter fit depending on garage door clearance and interior garage space, so precise garage measurements should be considered.

The Alpina B6 Coupe (E63) was based on the BMW 6 Series E63 generation, and when compared to its BMW predecessor models and earlier Alpina variants, it generally exhibits a slightly more refined and balanced size. While precise predecessor dimensions depend on specific models, the E63 generation's longer wheelbase and stable width provide improved interior space and road presence, making the Alpina B6 more substantial yet still agile compared to earlier, smaller coupes.

Compared to similar luxury sporty coupes from the mid-2000s, such as the Audi RS5 or Mercedes-Benz CL-Class, the Alpina B6 Coupe (E63) stands out with its slightly longer length and comparable width. Its 4820 mm (189.8 in) length places it in the upper middle range for grand tourers, while the width of 1855 mm (73.0 in) ensures a stable and aggressive stance. This size balance allows it to compete effectively in space and presence without becoming too large for usability.

The Alpina B6 Coupe (E63) has a height of 1371 mm (53.9 inches), which gives it a low and sleek profile typical of grand tourer coupes. This relatively low height combined with its wide stance enhances aerodynamic efficiency and stability at high speeds. While ground clearance specifics are not generally stated, Alpina models typically feature sport-tuned suspensions that lower the ride height slightly, improving cornering dynamics but requiring careful attention over speed bumps or steep driveways.

With a curb weight of 1720 kg (3794 lbs), the Alpina B6 Coupe is relatively heavy for a coupe, primarily due to its robust construction and luxury features. The weight distribution is typically close to the ideal 50:50 in the E63 platform, helping balance front and rear traction. This balanced weight distribution results in excellent handling characteristics, allowing for confident cornering and stable high-speed driving, especially when combined with advanced suspension and tire setups.

The Alpina B6 Coupe (E63)'s dimensions — a length of 4820 mm (189.8 inches), width of 1855 mm (73.0 inches), and height of 1371 mm (53.9 inches) — provide a spacious and comfortable interior for driver and passenger, blending luxury with sportiness. Its large 20-inch staggered wheels (255/35 front, 285/30 rear) and balanced weight contribute to a commanding road presence and refined driving dynamics. The ample luggage space of 450 liters (15.9 cubic feet) when rear seats are folded adds practicality for grand touring. Together, these attributes allow the Alpina B6 to deliver a unique blend of performance, comfort, and usability prized by enthusiasts and luxury car buyers alike.