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This all ties into my biggest MBP complaint: built-in batteries are idiotic. Methinks I'm going to crack open the chassis of this guy so I know how to replace the thing myself in the future.
 
You posted no links, just a bunch of statements (and quoted my fat fingered response. I have edited it to read correctly before you posted.)
Here are the links that go with the quotes I posted. As you can see, tires ARE covered by warranty for some auto makers.

http://www.gm.com/corporate/responsibility/safety/tire_safety/message.jsp
GM was the first automaker to include original equipment tires in its bumper-to-bumper new vehicle limited warranty. This means customers with vehicles still under warranty can bring their tire concerns directly to GM dealers.
http://www.ford.com/crossovers/flex/2010/warranty/new-vehicle/
Ford: Two separate warranties apply to tires on your new vehicle. The New Vehicle Limited Warranty covers tire defects in factory supplied material or workmanship for 100% of labor costs and on a pro rata adjustment basis for parts.
 
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