Words to the Rescue!
RAY: Here's the answer. Chuck's father-in-law didn't see anything.
TOM: He didn't?
RAY: He felt something. He went around and put his hand on all the tires. The purpose of having the air in your tires is to keep your muffler and such from dragging on the street. But the proper inflation is also important because it maintains the tire's ability to dissipate the heat that's created because of the friction that's made between the tire and the road.
RAY: And if you don't have enough air, the under-inflated tire gets much hotter and it will eventually lead to the disintegration of the tire, and blowout. So when Dad went around and felt the tires, he felt one that was decidedly hotter.
TOM: And he said that's it.
RAY: He didn't know much, exactly. The five seconds was a guess.
But it was enough to turn the light off, certainly enough to make the car safe to drive home. Pretty cute, eh?
TOM: Not bad at all.
RAY: Do we have a winner?
TOM: Yes. The winner is Martha Jones from Cheraw, South Carolina. And for having her answer selected at random from among all the correct answers that we got, Martha's going to get a $26 gift certificate to the Shameless Commerce Division at Cartalk.com, with which she can buy our book of car questions and car answers, Ask Click and Clack.
RAY: Congratulations, Martha!
[ Car Talk Puzzler ]