Is it actually caused by the tyres or is it the flow of air under the car?
It happens to EV’s so likely not engine noise related.
As it sounds different on different surfaces why aren’t all roads designed to reduce what is effectively noise pollution?
In: 1
There are two components to the “roar”. The first is vibration from the tyre sidewalls being deformed when supporting the vehicle mass and then returning back to shape as the tyre rotates. The second is the flexing of the tread blocks across the road surface as the tyre deforms and springs back during rotation. You’ll note 4wds with deep aggressive tread blocks for off road grip have much more tyre noise.
As for noise pollution it’s much less noise than airflow at anything over 60kmh or so so it’s not particularly significant.
Latest Answers