Tire valve covers with built-in LEDs If you want to add that personal touch to your Car, Bike - lighting is one of the best ways. They are self contained with light & motion sensors, LEDs, and replaceable built-in watch batteries. Custom LED lights for your wheels. When it is dark and your wheels start to move, they automatically light up creating a solid disk of light that appears to hover above your wheels. When you stop they will switch off to save battery power.