I was installing new tires on a 2015 Honda Accord, and was surprised by what the inside of the wheel looked like. I had never seen or heard of anything like it before and didn't know what the big black plastic things were stuck to the wheels, and the strange rim profile Turns out it is a noise cancelling resonator they came up with the lower the tire noise some Honda's are known for.
Honda Global | Noise-reducing Wheels - Picture Book
The periodic noise from the tires when driving on a highway can be annoying. This noise is caused by resonance in the tires’ hollow cavities when driving over unevenness on the road surface. This has been a serious problem, especially for an automobile manufacturer pursuing comfortable mobility...
global.honda