The benefits of a spare tire cover is not relegated to its aesthetic appeal alone, as it also provides protection from the harsh elements of nature. Some trailer owners like the rugged off-road appearance of an exposed spare tire on the rear, but harsh weather conditions may discolor or even affect the integrity and usefulness of your spare tire.
Remember that spare tires are also prone to wear and tear, especially when exposed to the harsh elements of the sun and rain. Dirt, sand and other road debris may also affect the quality of your spare tire. Ultraviolet (UV) rays of the sun are the worst enemy of any exposed part of the car. While waxing and polishing will help protect your paint from damage caused by UV and ozone rays, a spare tire cover is the single most effective way to help preserve and protect your spare tire.