just like the title says

is it legal to tint your headlights? and also its legal to ting your tail lights right??

Attachment that affects lamps prohibited

(7) No person shall drive upon a highway a motor vehicle if either or both of the lamps that are required on the front of the vehicle by subsections (1), (2) and (3),

(a) are coated or covered with a coloured material; or

(b) have been modified by the attachment to the lamps or the motor vehicle of any device that reduces the effective area of the lenses or the intensity of the beam of the lamps. 2002, c. 18, Sched. P, s. 19 (1).

Exception

(7.1) Clause (7) (a) does not apply if the lamps are of the prescribed type or meet the prescribed standards. 2002, c. 18, Sched. P, s. 19 (1).

Check out at section 62.7 of the OHTA

http://www.e-laws.gov.on.ca/html/statut ... .htm#BK120

It is illegal, so don't do it.

Just to ease my curiosity.... what kind of car were you thinking of doing this to?