A bike helmet is not to be considered a one-time investment. Bike helmets have a shelf life and need to be replaced once in a while – even if they’re not involved in a crash. Daily use also takes its toll on a helmet – even if you treat it carefully. But how long do helmets last? Experts agree that bike helmets last for 3-5 years and after that, they should be replaced.
Then there is the sun, which makes bike helmets deteriorate invisibly. UV rays affect the shell of the helmet, which risks becoming brittle with time. That’s why many helmet manufacturers say to keep your helmet in a cool, dark place when not in use.
But even daily use, without dramatic events, wears out a helmet over time. You bump into things and knock your helmet around while carrying it, or maybe accidentally drop it on the floor. No big deal, but in the long run even small things that don’t leave any visible traces can impact the structural integrity of the helmet.