So according the the warranty information:


BMW Tire & Wheel Protection
Protects you from the hazards of the road.
The BMW Tire & Wheel Protection program provides coverage in the event of damage to your tires or wheels as a result of metal, nails, glass, debris, potholes, blowouts, etc. (excluding cosmetic damage). You can choose a plan that covers your vehicle for up to 5 years.

Program benefits include:

Ultimate peace of mind. You no longer have to worry about unnecessary financial hardship in the event of damage due to a road hazard. We have you covered.
Damaged tire(s) will be replaced, not plugged or patched.
There are no maximum number of occurrences, no claim limits and no claim aggregate.
Benefits are not restricted by vehicle mileage.
Program benefits continue even if you replace your tires.
Up to $100 of towing expenses are covered.
Transferable — adds resale value.

Go to a junk yard and just drive around the yard for 30 mins. You are bound to pick up something in the tires, if what they say is true. No plugging or patching. lol

But in all seriousness, if you ask BMW, they are going to say tires must be bought from them. But if you don't ask and don't tell, I (Stressing "I" because I don't know if they take serial numbers or something down) buy the tires through tirerack.com and slap them on. It is going to be cheaper than dealer almost 100%. Then in the future if you get a nail or flat, just bring it in and utilize the warranty.

Just my $.02.

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2011 E70 50i M Sport