[Razel]

Mine went 40 miles on a dirt road, 12 miles on pavement to the first tire dealer that didn't have a replacement tire, and 30 miles to the next town that did. Picture was taken with the tire holding pressure, but 5 minutes later, the TPM alarm popped up. 82 miles on a flat tire, keeping the maximum speed below 50 (pavement). Let's just say that where I had been camping, a tow truck wasn't a good option.
I'd say BMW is a tad pessimistic on how long the tire will hold up.