When to Replace a Motorcycle Helmet: Age, Crashes and Wear

Replace a motorcycle helmet after any crash, and after about five years of use even if it has never been hit. The Snell Memorial Foundation FAQ gives the five-year figure, counted from first use. It adds that a hard drop, visible damage or worn-out padding calls for replacement sooner.

Other sources set the bar lower. Eazi-Grip’s UK helmet page puts a regularly used helmet at three years. Summit Harley-Davidson and Helmetking both say three to five. JS Accessories, a UK retailer, and Helmetking both say no law fixes an interval. So the date on your helmet and its condition decide. Snell’s figure sits at the top of the three-to-five range.

How long each source says a helmet lasts

The numbers differ, and so does the point where the clock starts.

Source	Replacement interval (years)	Clock starts at	Other detail
Snell Memorial Foundation FAQ	About 5	First use	Sooner after a hard drop, damage or degraded padding
Eazi-Grip, UK (July 2022)	About 5; 3 if used regularly	n/a	3 to 5 for regular use when the maker gives no figure
Summit Harley-Davidson	3 to 5	Manufacture date	Foam and shell both degrade over time
Helmetking (January 2023)	3 to 5 (most makers’ advice); 3 to 6 (average)	n/a	States no fixed standard or regulation
JS Accessories, UK retailer	5	Time exposed to sunlight	States no law on when to change

Snell publishes its interval without giving a full reason in that FAQ. The ageing explanations in the next section come from the retailers and dealers cited here. Where a helmet maker states its own limit, use it. Eazi-Grip says to follow the manufacturer first and fall back on three to five years only when there is no guidance. If a maker’s figure is shorter than five years, follow the shorter one.

The clocks differ too. Snell counts from first use. Summit Harley-Davidson, which runs April as Check your Helmet Month, counts from the manufacture date. A helmet can sit on a shelf before you buy it. When the two dates differ, I’d count from the manufacture date.

Why a helmet that looks fine can be finished

Snell’s FAQ says head injury usually comes from the sudden stop at the end of a fall. The shell hits something hard and stops almost at once. The head keeps moving and crushes the liner between skull and shell. That liner is usually expanded polystyrene (EPS), and it slows the head with a controlled braking force.

EPS protects by crushing, and it crushes once. Snell frames the design question as whether the liner is thick enough that it does not “run out of crush” before the head stops. A section already compressed in an earlier impact has less left to give. How much less, no rider can measure.

That is why a shell that looks untouched tells you little. Eazi-Grip says damage from an impact may not be visible. Helmetking says the outer layer can bounce back to its normal shape while the foam inside is damaged. It quotes Rich Handel, a test project leader at Consumer Reports, saying compressed foam reduces the safety margin you have.

Foam also ages without any impact. Summit Harley-Davidson says high-density foam degrades from sun exposure, oxygen and moisture. It becomes brittle and less able to absorb and spread an impact. Shell materials, whether plastic, fibreglass or carbon fibre, degrade too and can turn brittle. Helmetking adds heat and sweat as factors, and links fading colour and yellowing polycarbonate to sun damage. JS Accessories lists sweat, hair products and even petrol fumes as wear on the lining.

Careful storage slows this, though Summit notes the materials degrade even with proper care. Nothing in the sources offers a home test for the foam. That gap is why the guidance relies on a calendar.

After a crash or a drop

Replace the helmet after any crash with the helmet on, including a low-speed fall where your head brushed the ground. Helmetking and Eazi-Grip both say a helmet that has taken an impact should be replaced. Eazi-Grip adds that you may ask the manufacturer for advice.

A drop with nobody inside is the grey area. Helmetking says a fall from three to four feet onto a floor, grass, dirt or pavement is enough to look for a new helmet. A helmet knocked off a parked bike onto pavement is a real impact. If the maker’s customer service cannot clear it, replace it.

Finding the date and reading the labels

Most helmets carry a manufacture date inside. Helmetking says the stickers sit under the comfort liner and that the US DOT standard, FMVSS 218, requires them. Summit Harley-Davidson lists other places to look: the clasp, under the interior padding, or a long tag tucked into the neck padding. Dates show a month and year. Some helmets use a date wheel instead.

Photograph the label, and note the day you first wear the helmet. Then you can apply Snell’s clock or Summit’s clock without guessing.

Certification marks date a helmet as well. The US federal standard is FMVSS 218, published by NHTSA. UNECE Regulation No. 22 covers helmets in the countries that apply it. Its current series is 22.06, which supersedes 22.05. Standards get revised, so a helmet certified to the current series today can be on a superseded one by the time it reaches five years. These rules govern what a helmet must carry. They set no replacement interval.

UK riders get two views. Eazi-Grip’s July 2022 page lists three accepted routes: BS 6658:1985 with the BSI Kitemark, UNECE Regulation 22.05, or an equivalent European Economic Area standard with a matching mark. JS Accessories says legal helmets carry an ECE 22.05 mark on the back and an “E” label on the strap. It says ECE 22.05 superseded the British Kitemark and advises upgrading a helmet that carries only the Kitemark. The two pages weigh the Kitemark differently, so check current UK rules before relying on a 2022 list.

Checks to run on the helmet itself

Helmetking suggests checking the liner attachment, retention straps and shell once a month. These are the findings that matter:

• Shell damage. Cracks, chips, dents, deep gouges or delaminating call for replacement. Helmetking warns that one small crack can become a weak spot.
• Fading or yellowing. Helmetking ties colour fade and yellowing polycarbonate to sun damage. JS Accessories suggests comparing your helmet with an online photo of the same model to judge fading.
• Straps and buckle. Frayed webbing, loose stitching or a cracked buckle means replace the helmet. JS Accessories points out the strap carries heavy load in a crash.
• Liner and pads. A lining worn shiny, or black bits in your hair after you take the helmet off, points to a liner past its best, says JS Accessories. If the cheek pads come out, wash them, since they may regain shape. If they do not, replace the pads or the helmet.
• Fit. A haircut can change fit, says JS Accessories. Hold each side of the helmet and turn your head. If your head moves and the helmet does not, it has loosened. Eazi-Grip also tilts the helmet forward and back to test for slip. If new pads do not restore a snug fit, replace the helmet. Our helmet fitting guide covers what correct fit feels like. Eazi-Grip cites studies that put 10 to 14% of fatal injuries down to the helmet coming off.
• Visor and seals. Seals should be soft. JS Accessories says hardened seals may recover with silicone lubricant. Eazi-Grip says to replace a scratched visor at once, because it can cause dazzle from headlights. It also says visors letting through under 50% of visible light fall short of the standards and are not legal on the road. JS Accessories says a new visor adds life to the helmet.

A video from 2Brothers Powersports, “How To Tell It’s Time For A New Helmet”, addresses the same question.

Video: How To Tell It's Time For A New Helmet (2Brothers Powersports)

Storage and cleaning that slow ageing

For a helmet used only occasionally, Eazi-Grip recommends a helmet bag, kept where it will not be dropped or knocked. Never leave it lying on its crown or near a heat source. Helmetking adds that an indoor shelf that is neither cold nor damp beats a garage or shed. It also names a sunny window and a hot car as poor spots. A bar end or mirror stalk invites a drop.

Eazi-Grip tells riders to follow the maker’s cleaning instructions for the model, and gives this schedule:

• After each ride: lay wet paper towel on the visor for a few minutes, then wipe it off.
• Each week: clear the vents and intakes with a toothbrush or cotton bud.
• Each month: clean removable linings and cheek pads. Washing instructions often differ, so check the maker’s guidance.
• Every six months: clean the interior thoroughly, wipe non-removable pads with a damp cloth and let everything dry naturally.

JS Accessories says to use water only on a visor. Washing-up liquid, sponges and scouring pads can scratch it or strip its protective layers. Leave painting and stickers to professionals, says Eazi-Grip, since specialist paint and adhesive keep the shell from weakening.

Questions riders ask

Is a 10-year-old helmet still good, and can I use it?

It is past every interval listed above: Snell’s five years, Summit’s three to five, Helmetking’s three to six average. Helmetking does cite an MEA Forensic study of hundreds of helmets, in which some had not degraded after up to 26 years. It gives no detail on which helmets or how they were kept, and the same page still advises replacing at three to five years. For a helmet just past five that passes every inspection, Helmetking says it can serve a little longer, but not on long-distance trips. Foam cannot be tested at home. I’d replace a ten-year-old helmet.

What is the 2-2-2 rule for bike helmets?

None of the sources I reviewed define a 2-2-2 rule, so I won’t guess at it. If you mean a bicycle helmet, Helmetking says the US Consumer Product Safety Commission advises five to ten years. That is longer than the three to five for motorcycle helmets. On motorcycle pages, Eazi-Grip’s fit advice mentions a two-finger gap between helmet and jaw once the chin strap is fastened.

What is the average lifespan of a motorcycle helmet?

Three to five years of regular use covers most guidance. Helmetking’s average across makers is three to six years, and Snell’s figure is five from first use. Eazi-Grip says lifespan depends greatly on how much the helmet is used and how it is stored, and that its industry experts agreed three to five years is sound generic advice.

How can I tell if a helmet is out of date?

Read the manufacture date, then the certification label. A date more than three to five years back is a flag. So is a label that names only the British Kitemark. Wear can retire a younger helmet too: a cracked shell, frayed strap, loose fit or crumbling liner.

Which is the No. 1 helmet brand?

The sources I used rank no brands, so I won’t name one. Eazi-Grip puts fit and comfort ahead of the safety rating and calls the rating a third criterion. Our guide to 12 helmet brands you can trust names makers.

What should I check on a replacement?

Measure your head first. Eazi-Grip says to measure around the head just above the ears and at the forehead, and notes that sizes differ between brands. Try on several helmets, and do not take another size because your first choice is out of stock. In the UK, the SHARP scheme shows approved helmets and how much protection each offers. Summit Harley-Davidson says newer helmets can bring lower weight, more noise reduction, self-tinting face shields and extra ventilation. Our top 10 helmet picks are a place to start a shortlist.

Does price or repair extend a helmet’s life?

No interval above varies with price, so a premium helmet follows the same schedule. Riders can replace comfort pads and visors. The foam impact liner is not a part riders swap, and a crushed liner means a new helmet.

Used, fake and crashed helmets

A used helmet has an unknown impact history. The seller may be honest and still not know the last owner dropped it. You cannot verify it, and the damage is invisible. That is the clearest case against buying one secondhand.

Fakes are the other buying risk. JS Accessories advises buying from an official, reputable dealer and treating a deal that looks too good to be true as a likely counterfeit.

A crashed helmet is not a spare. If it is unsafe for you, it is unsafe for a passenger or a friend. Cut the straps before you throw it away so nobody can put it back into use.

Featured image: Josep Coronilla Helmet 24H Montjuic 70s by Peprovira, CC BY-SA 3.0, via Wikimedia Commons. Cropped.