LED Valve Cap Lights: How They Work and What to Know
Last updated: 15 November 2026
LED valve cap lights replace the plastic dust cap on your tire valve with a small aluminium cap that contains LEDs, a sensor and button-cell batteries. Because they sit on the valve, they glow wherever the wheel goes, with no wiring and no tools.
How do they work?
WheelGlow caps have a built-in light sensor and a shock (motion) sensor. In low light the caps switch on when the wheel moves, so the colors flash and blend as the wheel spins. In bright daylight you will barely notice them, which is why they look best at night, at meets and on camera.
What is in a set?
A WheelGlow set has 4 caps, one for each wheel of a car, in blue, green, red and multicolor. Each cap uses 3 AG10 button cells and batteries are included. The body is aluminium alloy and waterproof.
What do they fit?
They fit standard tire valves (Schrader), which is the type used on nearly all cars and motorcycles and on many bicycles. Thin road-bike valves (Presta) need an adapter. Read more in our fit guide.
Are they legal?
Rules for extra vehicle lighting differ per country, so check yours before driving with colored lights on public roads. We cover this in our legality guide.
How do I install them?
It takes about 10 seconds per wheel. See the step-by-step install guide.