Originally Posted by
CrankyOne
In the US and many countries you cannot have red lights or reflectors on the side or front of a vehicle. Must be white or yellow. Red is usually limited to rear facing surfaces only except for emergency vehicles.
I'm also not sure what purpose your red tyre would serve.
I'm not sure that is entirely true.
One can have side-facing red rear lights. And, on a trailer with side lights, the last row is typically red.
I agree that the red/white distinction on a bike might not make that much difference.
It looks like Revolights are available now.
https://revolights.com/
There are other wheel and spoke lights that one should be able to choose red for rear and white for front.