My 3-month-old 06 Sonata with barely 3500 miles just had a flat. There's a roofing nail in the flat area between the treads. So it may or may not be fixable. Is this covered by the Michelin warranty or maybe even Hyundai's warranty, and if so, does it have to go back to the dealer to get covered? Normally I take flats to the tire shop down the road. If they fix it, what does that do to warranty coverage (if any)? BTW, I am impressed with the spare and the jacking system. Worked quite well once I figured out the jack crank handle. Thanks!