[HoosierDaddy]

I've been reading on some other forums about tire rubber protectants. Lots of observations and opinions but I have found very little solid information. Everything from using the highest rated human sun-block lotion to Protectant 303 to "don't wash your tires because the natural oils are then lost".
I now approach the collective wisdom of the Newell Gurus!!!! Is anybody aware of a product that has independent data to support claims of UV protection for tires?
Or,,,Does anybody have long term experience with a product that appears to be effective?

[Retro]

I did some reading on this subject as well, my opinion would be to use tire covers when not in use and try and take the weight off when stored for long periods. I read when the tires are being used the tires natural waxes or oils and protectants surface from flexing, and like you said if you wash them it removes them. I would be curious if someone has something to put the same elements back on the tire once its washed. I don't think it's going to make me stop washing mine, but up north here we don't get the heat like in the south. I also keep mine indoors when in storage.

[Ozarkguy]

I used 303. http://303products.com/product-uses/tire-tech-facts
It appeared to work in the AZ sun. Made the tires look nice. I think tires age faster setting than regular use. Some seem to agree.

[Fulltiming]

303 seems to get very good reviews from users and detailers. Goodyear (http://www.goodyearrvtires.com/faqs.aspx then click on Care) says they don't endorse any particular product but to stay away from anything that has petroleum products in it. Michelin (http://www.michelinman.com/tires-101/tir...ducts.page) expresses the same concern about putting any product on your tires that has petroleum products in it. Bridgestone/Firestone (http://www.trucktires.com/bridgestone/us...ochure.pdf) says that it doesn't hurt to leave tires dirty and that washing tires 'excessively' removes the protective compounds they put in the tires. They state: "Washing tires too often can remove protective compounds and result in premature aging. Avoid harsh cleaning agents, steam cleaning and tire dressings."