These horror stories are why I always drive with the 4 corner tire pressure display right in front of me. I run 40 psi so if I see any one of those numbers start dropping into the 30's it raises my alert level. I have a full size spare in my garage ready to go at all times. Just last week after attending a party 40 miles from home I notice the left rear at 37. Drove it home, 33 at home. Sure enough a nail in the tire. Swapped tires, back on the road in 10 minutes. I always keep a good un mounted spare as well, purchased from bestusedtires.com to cover for a ruined tire. Nothing bites more than $200 for a nail in a tire.