hi
We got our windows done and we got advised that our front windows are legal and we can only be advised to take it off the police cant actualy take it off there and then our windows are only 50% tint. However if your window had some sort of tint on it before e.g standard tint that some cars do have like a blue tinge or dark tinge thro them, getting them properly done can affect the overall light showing thro the tint so thats when they have the power to start peeling it off in front off you.
Hope this info helps you
Wullie