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How to buy the best kids' bike


New or second-hand? Training wheels or balance bike? Choose the best bicycle for your child.

young girl on bike

Remember your first bike?



Our guide will give you advice on what to look for when buying a kid's bike. There's no current review of this product. We don't have a current test, however if you would like to see us conduct a test you can use our request a test form.

Getting a new set of wheels is a big deal for most kids, so you want to get this purchase right. Choose the right bike and you'll be buying them a ticket to independence, fitness and hours of fun. Pick a dud and you may end up with more than just buyer's remorse.

Does high cost equal high quality?

No, but buying a better bike can mean getting a safer one. While all new bikes should meet the Australian standard for bike safety, it's still good to know what to look for – especially if you're going down the second-hand route.

Can you trust a used model?

If cash flow is an issue, second-hand bikes are generally as good as the new version. In theory, you should be able to get a quality used bike for the same price or less than a cheap, not-so-good new bike.

While most kids probably prefer a shiny new ride, even if it's low quality, you can sweeten the deal by letting them decorate a pre-used bike with paint and stickers.

Size matters

Safety is always the number one priority - and that means buying a bike that's the right size and fit. It's tempting to buy a bigger bike they can 'grow into'. That option might be okay for clothes, but putting a kid on the wrong size bike can be a recipe for an out-of-control disaster.

Bike sizes are based on wheel diameter. The digits that matter are usually found on the bike wheels themselves, and will be in cm or inches depending on where the bike was made.

Every kid is different, but here's a generalised size guide across ages:

  • 3-5 years 30cm/12in
  • 6-8 years 40cm/16in
  • 9-11 years 50cm/20in

A bike is the right size when your child can:

  • sit on the saddle and rest the balls of both feet on the ground,
  • straddle the top bar with about 3-5cm clearance and with both feet flat on the ground, and
  • reach the handlebars with a slight bend in the arms when sitting on the seat.

If the bike has handbrakes, your child should be able to grasp them and apply enough pressure to stop the bike.

Tip: If you're not sure what size to get, try a specialty bike shop first, and have your child fitted with the right size bike. These shops will usually allow a test ride, which isn't possible when buying online and might not be an option in a department store either. If you're unable to try the bike before buying (such as when buying online) make sure there's a good return policy so you can return the bike if the fit's not right.

Okay, I've got the size bit sorted – what else?

Brakes

The Australian standard says that children's bikes must have at least two braking systems. One of these must be a back-pedal brake (the kind where the brakes are activated when you pedal backwards).

Back pedal brakes are the safest option for kids, especially very young children who don't have the hand and arm strength to operate handbrakes safely. There's usually a handbrake for the front wheel too - check its quality to make sure it's not a flimsy plastic lever that bends when squeezed.

Wheels

Shiny chrome-plated steel rims look slick, but their aluminium cousins are the safer option. Our sister organisation in the US tested both types and found braking distance with steel rims was five times longer than with aluminium ones. If you're not sure how to tell the difference, take a magnet with you – it won't stick to aluminium.

Avoid models with a quick-release front wheel – they're not necessary and can be dangerous if not installed correctly.

Chain guard

Kid's bikes should have a guard that covers the chain wheel and the upper run of the chain. You should only be able to remove it with a tool. If the bike you want doesn't have one, make sure it's put on - or buy a different model.

Gears

Gearing depends a lot on how good a cyclist your child is, and where they'll be riding. For beginners, a bike without gears is a better buy. Kids with more experience might find gears useful on uphill rides.

The main thing is to listen to your child – don't give them a bike too complicated for their skill level.

Pedals and handlebars

There should be a tread on both sides of the pedal, and if it's rough enough to make them wear shoes – even better.
The ends of the handlebars should be covered so raw metal doesn't stick out, and the handgrips should be secure.

What about balance bikes?

The pedal-free option isn't just a hip choice for parents who want to Instagram their toddler on a funky wooden cruiser. Like the name suggests, the idea is to help your child get the balance and steering part sorted before they graduate to the pedalling bit.

Balance bikes are easy for children to move around, and have a low centre of gravity. The child needs to be able to walk, and should be tall enough to straddle the bike before they can use one, so around 18 months is a good age to get started.

Scoot and glide

Balance bikes have no pedals, chain, or training wheels. The child simply scoots their feet along the ground to speed up, and then raises their feet to coast along. Some come with a rear-wheel hand brake, but if that's too complex, dragging feet along the ground as a brake works just as well.

The concept is good, but balance bikes have a limited life span. Simply removing the pedals from a regular bike and attaching them again when your child is ready will do the same thing. It's a legitimate way to save money if your budget doesn't stretch to two bikes over a short time frame.

Balance bikes vs training wheels

Companies that make balance bikes say they help kids learn to ride quicker and generally move onto a bike with pedals and no training wheels with ease. They say kids can become dependent on training wheels, and can pick up bad habits that may take time to unlearn.

Training wheels also have some safety issues. The child sits higher up and the base width of the training wheel is quite narrow. When turning, the child's weight is shifted from the rear to the outside training wheel, which can also reduce braking power.

If you choose this option, start with the wheels level with the ground, and gradually raise them as your child gains confidence.

Safety gear

Safety accessories required by the Australian standard are:

  • a bell or horn, so your child can alert pedestrians and other cyclists, and
  • front, rear, pedal and spoke-mounted reflectors.

If your child is going to be riding at night – which isn't recommended – they'll also need lights.

Use your head

Don't even consider giving your child a bike to ride without a helmet. An Australian Standards-approved helmet is a must. A helmet can't be a surprise present – your child needs to try it on for size and style before you buy it.

A good helmet:

  • fits snugly but comfortably on your child's head,
  • sits firmly about 1–1.5cm above the eyebrows,
  • shouldn't be able to move forwards, backwards or sideways,
  • feels comfortable to wear – not too hot or heavy,
  • is a bright colour to make it more visible, and
  • is easy to do up and undo, and has straps that are easy to adjust.

Putting it all together

You don't need a mechanical engineering degree to assemble a bike, but if tinkering with nuts and bolts isn't a strong point, head to a professional.

The Australian standard recommends you have the bike assembled by a qualified bicycle mechanic. Bikes that come fully assembled should meet the standard for assembly – look for a checklist or certificate that confirms this.

When we last tested adult bikes, several weren't properly assembled, so check that things like handlebars, brake pads and pedals aren't loose. You should also check that the wheels spin true. To check, turn the bike upside down, resting it on its handlebars and seat. Spin the wheels and look at them from the front, making sure they don't have a back-and-forth wobble – this would indicate that the spokes are buckling or the wheels aren't attached tightly.

Read the instructions

All bikes should come with use and maintenance instructions. The Australian standard for bikes requires certain instructions, labels and warnings be included with the bike, when applicable. If you're buying second-hand, some of them will be missing, but it's good to know what's expected.

  • If the bike is only partially assembled, it should have simple, clear instructions for putting the pieces together, as well as which tools should be used.
  • Assembled bikes with misaligned handlebars, or pedals removed (for fitting in a box, say), should have a label warning that adjustment is required.
  • The bike should always have the name and address of its manufacturer, importer or distributor, and an identification number.

Specialty bikes

Bikes styled to look like off-road or stunt bikes (like 'BMX' or 'mountain' bikes) should carry a warning label if they aren't actually suited to that purpose. If your kid is keen on this type, make sure it's the real (and safe) deal.

Biking with babies

If your child is not old enough to ride a bike, you can still take them with you when you ride.

The three main options for carrying your precious cargo are:

  • a trailer
  • a child seat
  • a trailer bike (also called a half-bike trailer)

Trailers

A trailer is probably the safest way to carry a young child, but it can still be risky. For one, it's a pretty rough ride, and your baby's brain will get quite a rattling. Experts say you shouldn't take a baby under 12 months old in a trailer. You'll also find it hard to buy a helmet that fits an under-one. And no helmet equals no biking.

Depending on the model, bike trailers can also tip over pretty easily. If you're choosing this option get one with:

  • rollbar protection,
  • a five-point harness, and
  • a hitch that will allow the trailer to stay upright even if the bike tips over.

Also consider:

  • ventilation (it gets pretty hot in there)
  • protection from the elements (rain and wind)
  • protection from bottom bumps
  • ease of attaching
  • ease of storage and transportation

Child seats

A child seat can be mounted on the front or back of your bike. Your child needs to be strong enough to wear a helmet and still keep their head upright – so we're generally talking kids over 12 months. The seat should also have guards so their hands and feet can't get caught in the spokes.

As with trailers, it's a pretty bumpy ride for the baby. The main problem with a child seat is the destabilising effect it has on the bike: one wriggle and the bike falls sideways - or worse, tips over.

Many accidents happen when a child is sitting in the seat while the bike is leaning against a wall, or on its stand before you get on. So putting your bub in a child bike seat is really a two-person job.

Half-bike trailers

A half-bike trailer has a seat, handlebars, pedals and a rear wheel and attaches to your bike like a trailer. It's the ideal option if your child is old enough to keep their balance and do a little pedalling, but not strong enough to cycle a long way on their own. You may also score a little help on those uphill slogs!

Cost

A decent quality bike with 12-inch wheels plus training wheels for a three- to five-year-old is likely to cost around $140 to $200.

A larger (20-inch or 24-inch) bike for a child up to 12 can cost upwards of $240.

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