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August 21, 2026 Service bulletin

A particularly noticeable factor is the vibration of the air column in a tire

Audi technical service bulletin TSB_2079696_2 for 2020-2025 Audi A4, 2020-2027 Audi A6 and 2020-2026 Audi Q5 and others.

Bulletin number
TSB_2079696_2
Component
Unknown or other
Summary
A particularly noticeable factor is the vibration of the air column in a tire. When a tire starts to vibrate because of the road contact, this can lead to cavity resonances inside the tire that are transmitted via the wheel rim and the running gear to the vehicle interior. Because of the vehicle design and due to the specific properties of different wheel and tire combinations, a whining noise can occur at high speeds. This is a result of toroidal resonance whose frequency is noticeable between 180 - 250 Hz irrespective of the vehicle speed.

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