New lightweight, road-specific run-flat insert designed as a failsafe for tubeless tyres, claimed to offer better performance and ride quality, too When you purchase through links on our site, we may ...

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 ...

The OPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight, tunable, tyre insert, which is inflated with a bike pump rather than arriving as a fully turgid foam strip. Similar to a motorcycle ...

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