Yes, tinted windows for sun protection or other reasons should be declared to your insurance carrier. It is essential to understand that some window tint levels may be illegal in some states – usually, 30% to 35% tint level is the highest acceptable level of tint. Also, which windows on the vehicle are tinted is critical – side windows may be more acceptable to your carrier – and the police – than the front and rear glass the driver needs to see through to drive the vehicle safely.