removing tint is really easy, razor blade a corner (press the blade flat against the glass, so the entire sharp surface is against the glass).
Try to keep it in one peice, pull it off.
For the rear, dont use a razor. Use your fingernail, dont scratch against the heated elements, and use a ammonia/ethanol solution to loosen the glue if you're having trouble.
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Hot: 2001 Estoril M Roadster
ZCP 19's michelin supersports, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
ZCP 19's michelin supersports, deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 18's w310's,