[PIGEON1]

Not to tell anyone what to do here...but worked auxillary with the OPP and the laws state that you cannot have tint darker than:

35% on the front two windows
and it is ILLEGAL for mirrored tint on any window of a vehicle in Ontario an'
It is up to the officers discretion if he thinks that the tint is too dark on the rear windows (officer must be able to see into the vehicle without a floashlight during the day and with one at night.)

If he cannot see in then he can ticket you for "illegal" tint even if the law states you can have 5% and even "limo" now on the very rear window. It is up to you, but with my experience, 20% is the best one to go with. It is dark enough to hide the interior and not too dark to get a ticket. thats what my Focus had and now my Grand Am.
Hope this helped out a little.