i have a SGM with light gray interior. i'm thinking of 30%, but still deciding whether to go for a darker shade for the rear windows. anyone here has different tint shades for front and rear? it's okay for big cars or suvs but i don't know of our IS can pull that off.
are you more concerned about looks or blocking of UV? because if it's for UV protection and you don't want the hassle of getting a ticket, they have clear tints but blocks about 75-90% of harmful UV's...it's like getting 20% protection but with out the fear of getting pulled over.