BMW has completed the construction of the world's largest vertical wind tunnel at its Research and Innovation Center (FIZ) in Munich. The facility measures nearly 100 meters in length, 45 meters in height, and 25 meters in width.
The wind tunnel features 216 microphones for precise detection and analysis of background noise, utilizing an acoustic camera that identifies sounds with less than one centimeter accuracy. It is equipped with advanced systems, including:
A four-wheel drive dynamometer for studying wind and tire noise.
Laser vibrometry to measure mechanical vibrations of vehicles.
These innovations allow engineers to accurately simulate road conditions. A powerful 4.5 MW fan can move 100,000 m³ of air per minute at speeds up to 250 km/h.
The expansive tunnel can accommodate even the largest BMW models, such as the BMW X7 and Rolls-Royce Phantom. The absence of sound reflections ensures realistic studies of aerodynamic and acoustic properties. Data from the tunnel will inform the development of BMW's new electric vehicle lineup, Neue Klasse, starting with the iX3 crossover in 2024, followed by the i3 sedan in 2026 and an expansion to at least eight models by 2028, including the i3 Touring and iX4.
This wind tunnel is part of the Aerodynamics and Electric Drives Center (AEC), which also focuses on next-generation battery development. A pilot line for assembling inverters for electric motors spans 800 m², while 15,000 m² is dedicated to battery production and testing. BMW reaffirms its commitment to innovation with the opening of this advanced facility, which will be key in developing low-noise vehicles and modern electric cars that meet future standards.