According to the authorities at SFI, (http://www.sfifoundation.com/seatbelt.html) seat belts should be maintained, inspected, and replaced or re-webbed every 2 years. The 2 year life is crucial as the belts degrade as they are subjected to the elements over time. To put this into perspective, the folowing is a percentage of strength maintained by Nylon 6.6 […]