As you may know, UV light is very hard on tires. That's why you see trailers and RV's with pieces of wood over the tires. I originally had tarps over my wheels, but I always had planned to sew a cover using marine vinyl. That's normally used for upholstery in boats, exposed to a lot of sun!
Finally got a few sunshiny days so here it is!
The ugly blue tarp is covering insulation so my water coming into the house doesn't freeze! But the wheel cover is purple to coordinate with the house.
When I can afford some more marine vinyl I will make one for the other side that is shaded by trees, so the tarp is in better shape.