I believe that most of us try to keep our bikes clean. I have found a product at Walmart that I have used and endorse. It is called "Platinum: - Red Hot Tire Shine. It is specifically formulated for motorcycle tires and is a non-silicone formula. Clean your tires and spray this product on them. Makes the tire shine. Make sure you wipe the rims and disc rotors off after your have sprayed the tire.