Originally Posted by pauld73
Well here in PA you are constantly driving over salt water in the winter from the salted roads. Salt is highly corrosive and the painted spare tire wheel won't last long with salt spray on it. The tire cover would keep the salt spray off the steel wheel and prevent rusting.
Oh, I understand salt on the roadway, I used to live up north. But, a spare tire cover will ony cover either the top or bottom of the spare tire. Meaning it will hold the snow/salt spray either on top of the cover towards the metal underside of the body, or in towards the inside of a tire cover such as a bucket holding a mixture of salt/snow/water combination against the tire and wheel. Either way it will trap the water/snow/salt mix.
The paint on the spare wheel should not react to the chemicals of road salt any earlier than what the undercarriage of the Liberty itself. If it is that much of a concern you could always when temp rise above freezing go to the car wash, lower the spare tire and spray it off with a pressure sprayer. Or before winter weather sets in spray the wheel with a coating of WD-40 or another good lubricant spray. Better yet, just put a good coat of wax on it.