The front tire is a 245/45ZR-17, a very common size and one that nearly every tire manufacturer offers in at least one of their ultra-high-performance tire lines. The rear tires, size 275/40ZR-18 ...

But the Bimmer, shod in 245/45R19 Pirelli P-Zero run-flat tires, required a different approach. I was about 10 miles from civilization at the time of the blowout, well below the run-flat tires ...