What are the reasons for the loud humming noise when driving an Audi A6L?

1 Answers
DallasLee
07/24/25 10:01pm
Audi A6L vehicles emit a loud humming noise while driving mainly due to the following reasons: 1. Abnormal noise caused by excessive tire pressure: During daily use, tire pressure should be adjusted within the standard range (generally 2.3bar-2.5bar). Excessive tire pressure can lead to severe wear on the tire crown, reducing the tire's shock absorption and buffering performance, and significantly increasing tire noise. 2. Abnormal noise caused by uneven tire wear: The tire crown comes into contact with the ground and friction occurs. If the tire crown wears unevenly with bumps and depressions, it can produce a humming noise. 3. Abnormal noise due to damaged wheel hub bearings: Worn wheel hub bearings can generate a humming noise, primarily caused by long-term use leading to wear and looseness. To protect the wheel hub bearings, avoid violent impacts on the wheels and prolonged driving through water during daily use.
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