Put it in perspective - who here has had their vehicle destroyed by a porky? Not me, nor anyone I know. And many of our vehicles have spent weeks sitting in porky country while we were in the backcountry. You may get mauled by a grizzly bear too, but I wouldn't suggest shooting every one you see because of it.
I personally think porkies are cool animals and always enjoy seeing them in the bush. I also thinking you may as well eat your own tires as eat the porky - the taste and texture can't be too much different.