Do tire balancing beads actually work?

A video on YouTube. In Science & Engineering, a Krater category.

Summary by Krater

Steve Mould investigates whether tire balancing beads work by examining the physics of rotating cups, mass distribution, centrifugal force, and wheel hop resonance.

From the video

Answers: Do tire balancing beads actually work?

tire balancing beads physics
centrifugal force in rotating frames
wheel hop resonance in cars
mass offset and cup rotation

What it concludes

Tyre balancing beads balance a spinning cup by shifting mass to the position opposite the fixed mass at high speeds.
Tyre balancing beads only work when tyres reach super-critical self-balancing speeds around 80 km/h or 50 mph.
Below the super-critical speed threshold, balancing beads migrate to the heavy side of the tyre and make the vibration worse.

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