Tires that tell the car how much grip they have can shorten braking distance by 12% on a wet road. POLYN enables that through its VibroSense TMS.

A hum, drone or growl that rises with road speed and changes as the car is steered is most often a worn wheel bearing. Tyres, ...

If your e-bike motor stopped working after a tire change or rear-wheel removal, check wheel seating, brake drag, motor connections, wiring and sensors before assuming the motor or controller failed.