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How do thirty pounds of air in your tires hold up two tons of car?

February 16, 20153 min
Cars are heavy machines, so how can a few small, pressurized tires support their weight? Marshall Brain explains how tire pressure and contact patches work in this episode.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices