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 ...

Years ago, PumpTire developed a self-inflating bicycle tire that used the compression of the tire on the ground to suck air inside. Unfortunately, the entire tire had to be replaced once it wore down.

While it's nice to hear that Goodyear is developing self-inflating tires for cars, where does that leave bicycle riders? Still pumping, presumably? Well, not if they're running PumpTires on their ...

We may receive a commission on purchases made from links. While most drivers aren't spending on sets of the most expensive tires in the world, motorists still want to get their money's worth from ...