I bought new tires 14,500 miles ago. A nail recently punctured the tread of one tire near the side wall. I took the car to a tire dealer and they said the tire could not be repaired because the nail was so close to the side wall. Checking on line seems to confirm this story.
They further said that because my car had all-wheel drive it would be necessary to replace all four tires rather than just one or two. They the difference in the diameter of a new tire and the existing tires would cause problems with the differentials, axles, etc.
What do you say? One tire? Two tires? Or all four?