I'm sure it's been asked a zillion times but, inspired by The Bear's thread about helmet 'give', I've been wondering about the life expectancy of helmets generally. Ever since I learned to ride, I've always heard that the received wisdom is that the materials degrade and you should replace helmets every 5 years or so. Bearing in mind that I've been riding for over 20 years, is this still true or do modern materials last longer? Also, does the amount you wear them and how you store them make a difference?
The reason I ask is that I have a Roof open face helmet that is now 10 years old but (at least superficially) in 'nearly new' condition. I almost never wear it except for very warm trips in the US. It has been used for a matter of 6-8 weeks at a time on two or three occasions and otherwise stored in its original box and bag. Don't ask me for the logic behind wearing an open face helmet in the US and a full face/flip front helmet everywhere else but, given that any helmet is safer than no helmet, is a 10-year old undamaged helmet really likely to offer significantly less protection than a similar brand new one?
The reason I ask is that I have a Roof open face helmet that is now 10 years old but (at least superficially) in 'nearly new' condition. I almost never wear it except for very warm trips in the US. It has been used for a matter of 6-8 weeks at a time on two or three occasions and otherwise stored in its original box and bag. Don't ask me for the logic behind wearing an open face helmet in the US and a full face/flip front helmet everywhere else but, given that any helmet is safer than no helmet, is a 10-year old undamaged helmet really likely to offer significantly less protection than a similar brand new one?



