Fat tire bikes are made for off-road mountain biking, or riding on uneven surfaces like gravel paths, forest trails, or sandy beaches. They can also be an asset for negotiating city streets slicked ...

This supercharged, intuitive trail machine can turn any intermediate rider into a World Cup–level legend in their own mind.

Tubeless mountain bike tires certainly improve on their conventional counterparts, but could they perform even better? The OPTIS insert is claimed to help them do so, by serving as an inflatable ...