I'm getting my 2022 M3LR tinted in a few days and I'm going with the tint brand's more expensive tint on the sides for maximum UV reduction. I'm also tinting the roof panels but is there any point to use the same type of tint? Is the rear roof glass on the M3 already protected from UV from the factory? If so then it would seem a waste and I should just use the cheaper tint there for just privacy.
