Are led lights on tires illegal

Yes. They’re illegal.

California law allows additional aftermarket vehicle lighting which includes neon underglow. In California neon underglow is legal, as long as you follow these restrictions: Red color may not be visible from the front of the car. … Underglow must not emit more than 0.05 candela per square inch.

Yes, it’s fine, as long as they meet these standards. It’s not in other countries, just as the other things that are legal here aren’t okay: underglow, coloured halos around headlights, etc.

Neon car lights, also referred to as “underglow” lights, are non-standard neon or LED lights that attach to the under body of a car, truck, or motorcycle. … As a general principle, underglow lights are legal so long as they remain covered and unlit on public roads and do not flash or include the colors red or blue.

Lower intensity HID bulbs emit yellow or white light, and higher intensity HID light is blue. Any HID headlights emitting blue or purple light are in violation of the California statute.