Originally Posted by T_D
I'd at least do a light tint, for the UV protection on your interior.
This is a good benefit of tint, but if you don't go that route you can apply a product called 303 Aerospace to the interior. It does an awesome job of cleaning and protecting with no shine, and was originally designed for use on marine products which are exposed to full sun. They advertise it as "SPF 40 for your car".