Originally Posted by XplicitRacingDesign
How did they know it was 30% and not 35%? That's not really a huge difference to be able to tell 100% by eye. And I've personally never seen a shop pull out a tint meter and check (if they did, sucks for you) I could see if you had 20% or darker.
Every place I've been to have always pulled out the tint meter.