Anyone who rides a bike would agree that flat or low-pressure tires are a drag. But why fiddle with a pump when the tire can inflate itself? San Francisco-based startup PumpTire has invented just such ...

The best portable tire inflators on the market, plus helpful tips on picking the right one for your needs.

A flat tire can ruin the joy and fun of your journey, especially if it happens in the middle of the road with no gas station in sight. Well, the frustration is obvious, but many car owners still leave ...