Instead of pricey airless lawn mower tires, one option is to fill a flat tire with expanding foam. It's a popular hack, but how well it works is up for debate.

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 ...

Puncture-proof tires, either solid or foam-filled, are popular items on rental machines and machines used in hostile environments, such as demolition, landfills, and quarries. Solid tires sometimes ...

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 ...

If you've been bothered with consistently flat lawn mower tires but don't fancy paying hundreds or even thousands of dollars for airless replacements, have you considered filling your tires with foam?