Many people put things like a air filter, noise cancelling headphones, and a light bulb in their car to make it quieter.
There is no one answer to this question as it depends on the specific car and its sound system. However, some methods of making a car’s sound system quieter could include changing the speaker size, adding noise cancelling headphones, or even altering the car’s settings to reduce noise.
Some people believe that tires get louder as they wear. However, this is not always the case. In some cases, the tire might get softer and be less noisy.