Helmets are one of - if not the most - important pieces of gear when it comes to bike safety. While they are built to last, you still need to replace them after a certain period. Most people and brands claim that the average lifespan of a helmet is five years. Is this industry-backed advice genuine safety guidance or a marketing strategy by helmet manufacturers to boost sales?
The truth, however, is more nuanced than a simple Yes or No. Helmets don’t stop functioning after exactly five years, but wear and tear are inevitable and begin as soon as you start using them. So, understanding the science behind helmet degradation helps riders make informed decisions about their safety gear.
What Does the Snell Foundation Say About Helmet Replacement?
Snell Memorial Foundation is the world’s leading authority for helmet testing and certification. Most premium brands have the Snell certification stickers inside. The official statement of Snell on this matter states:
“The five-year replacement recommendation is based on a consensus by both helmet manufacturers and the Snell Foundation. Glues, resins, and other materials used in helmet production can affect liner materials. Hair oils, body fluids, and cosmetics, as well as normal “wear and tear,” all contribute to helmet degradation. Petroleum-based products present in cleaners, paints, fuels, and other commonly encountered materials may also degrade materials used in many helmets, possibly degrading performance. Additionally, experience indicates there will be a noticeable improvement in the protective characteristics of helmets over a five-year period due to advances in materials, designs, production methods, and standards. Thus, the recommendation for five-year helmet replacement is a judgment call stemming from a prudent safety philosophy.”
Factors That Affect Motorcycle Helmet Degradation
Several factors contribute to the wear and tear of your motorcycle helmet.
- Usage Frequency: Helmets of daily commuters wear out faster for obvious reasons.
- Storage Conditions: Heat exposure, UV radiation, humidity, and other weather-related factors accelerate degradation.
- Maintenance Practices: Both the outer layer and inner lining of the helmet need proper care.
- Impact History: Crashes – regardless of severity – mandate immediate replacement
When You Must Replace Your Helmet
Leading helmet manufacturer Shoei provides clear criteria for when motorcycle helmet replacement becomes non-negotiable. Replace your helmet immediately if ANY of these conditions apply:
- If the lid has been involved in a crash or a direct impact.
- If the comfort padding becomes loose or isn’t as stringent as the fresh unit due to its heavy usage.
- If the retention system shows any sign of deterioration or becomes dysfunctional due to usage.
- If the helmet feels loose or if it slides sideways even when the head is tilted minimally. This might be a direct result of the synthetic foam padding getting loose due to continued usage.
Conclusion
Considering the 'five-year replacement’ thumb rule is completely backed by organizations such as Snell, it sounds very legitimate to do the same. However, there is no guarantee that if the helmet isn’t put to its paces in its entire lifetime, it suddenly loses its protective capabilities; hence, its lifetime can also be extended by a year or two.
One way to protect your helmet is to invest in helmet cover from GrandPitstop. Made to resist dust and abrasions, buying a cover like this can keep it in better condition for a longer period of time.
Please note: The above article is based on the pre-assumed usage of internationally safety-certified helmets.