Found
this posted here
"TAIL LAMPS
§ 4513.05. Tail lights and illumination of rear license plate.
(A) Every motor vehicle, trackless trolley, trailer, semitrailer, pole trailer, or vehicle which is being drawn at the end of a train of vehicles shall be equipped with at least one tail light mounted on the rear which, when lighted, shall emit a red light visible from a distance of five hundred feet to the rear, provided that in the case of a train of vehicles only the tail light on the rearmost vehicle need be visible from the distance specified.
Either a tail light or a separate light shall be so constructed and placed as to illuminate with a white light the rear registration plate, when such registration plate is required, and render it legible from a distance of fifty feet to the rear. Any tail light, together with any separate light for illuminating the rear registration plate, shall be so wired as to be lighted whenever the headlights or auxiliary driving lights are lighted, except where separate lighting systems are provided for trailers for the purpose of illuminating such registration plate.
(B) Whoever violates this section shall be punished as provided in section 4513.99 of the Revised Code.
HISTORY: GC § 6307-78; 119 v 766(792), § 78; Bureau of Code Revision. Eff 10-1-53; 149 v S 123, § 1, eff. 1-1-04."
Then searching that code i found it here:
http://codes.ohio.gov/orc/4513.05
So if you tint, it still has to be visible up to 500 feet. You can always try to find a brighter brake light or LED to compensate for the tint, depending on how dark you want to tint. I've thought about tinting the tails but since my car is already a shade of red, I dont mind them being red still.