Instead of pricey airless lawn mower tires, one option is to fill a flat tire with expanding foam. It's a popular hack, but ...

Add Yahoo as a preferred source to see more of our stories on Google. Foam-filled tires are made of regular rubber but replace the air inside with hardened liquid urethane. While they come with ...

Following is a transcript of the video. Narrator: This is a tire technician disassembling what's known as a foam-filled tire. It's a grueling process, but an important one for these special kinds of ...