There is a product out there called Aerospace 303 Protectant. They describe themselves as "SPF For Your Stuff". It was developed some time ago but is not sold through the normal retail channels such as Walmart or auto supply stores. It is used extensively by aviation mechanics to treat tires, windshields and fiberglass parts. It comes in a 8 oz. pump spray bottle for about $6.00 and also in 16 oz spray bottles. I have been using it to dress my tires to give them that "new" look without making them slippery. It works very well for that. I have also tried it on leather seats and it does wonders for making leather look like new too. If you read the product sheet it is pretty much a miracle chemical that has a world of uses, many of which will adapt to motorcycles that have special needs. It is not harmful to paint, although not marketed for such. I have found that using it for tires, leather seats and jackets etc., rubber pads and floorboards and especially the inside of our black fairings dramatically improves their look and protects them from untraviolent sunrays. Probably the best place to get this stuff is at your local boat shop as they use it to spray on fiberglass boats and also on the cloth tops of boats as it also acts as a sunscreen for fabric as well. Aviation mechanics are another good source, but they are usually harder for most people to gain access to. Most products promise us the world but deliver far less. This stuff delivers on all accounts without charging an arm and a leg.