Beware - the tire
Beware - the tire manufacturers will only cover the costs if they have a contract with the dealer whom you are purchasing the tires. I hit a pot hole, damaging one of my run flats ($500), and wanted to see if BMW would replace it, or at least offer one at a reduced price since it had less than 5000 miles on it with almost all of the original tread. BMW wouldn't budge, so I called Bridgestone directly to see if they would honor their 'Platinum Pact warranty' and was told that BMW is not in contract with them and in order for the tire to have been covered, it needed to be purchased at one of their authorized dealers (Tires Plus, Firestone, Morgan's Tire, or another mom-n-pop shop that I can't recall.)
**So, no, the manufacturers aren't going to cover the tires unless they were sold by one of their authorized dealers.**