Porsche Pirelli team up to offer tire options for classics

One of the biggest challenges for owners of vintage cars isn't keeping them running. It is keeping good rubber around their wheels. As the new-car industry moves toward making 17-inch wheels the default go-to, owners of cars that left the factory with 13-, 14-, 15-, or 16-inch wheels are left with fewer and fewer tire choices. But Porsche and... Porsche, Pirelli team up to offer tire options for classics