A ten-minute monthly check that keeps your child's bike both safe and running smooth: the tyres, brakes, chain and four...
Most of what reaches our workshop as a fault is not a fault. A loose bolt, a soft tyre, a dry chain — and all three would have been prevented by fifteen minutes a month.
A child's bike takes punishment an adult's never does: dropped on the ground, left in the sun, ridden through sand, borrowed by a younger sibling. So it needs simpler care, but more regular care.
1. A three-tier maintenance routine
- Every fortnight: tyre pressure, and the push test on the brakes.
- Every month: tighten the four critical bolts, oil the chain, clear sand from the rims.
- Every season: inspect brake pads, revisit saddle height against your child's growth, and check tyre sidewalls for cracks.
The first tier is what really matters, because an underinflated tyre alone ruins the whole riding experience.
2. The M-check, in two minutes
A route that covers every important point in an order you will not forget: start at the handlebars, drop to the front wheel, rise to the saddle, drop to the pedals, rise to the rear wheel. The line you traced looks like an M.
- Handlebars. Grip the front wheel between your knees and try to turn the bars. Independent movement means a loose bolt.
- Front wheel. Lift and spin it, watching for side-to-side wobble. Obvious wobble means a buckled rim.
- Saddle. Rock it sideways and back to front. Any play means it needs tightening.
- Pedals. Turn them backwards by hand. Metallic noise or heavy resistance points to a bearing needing attention.
- Rear wheel. Same as the front, plus a look at the stabilisers if they are still fitted.
3. Tyres: the number is printed on the tyre
Do not guess the pressure. It is moulded into the sidewall, and it is a range rather than a single figure.
A practical rule without a gauge: press the tyre hard with your thumb. If it sinks more than about five millimetres, it needs air.
A soft tyre causes no breakdown — it steals your child's effort. Pedalling gets heavier, they tire quickly, and they conclude the bike is bad when the problem is air. This is the correction we make most often for parents.
4. The chain: a drop per link, then wipe
A dry chain squeaks and wears fast. An over-oiled one collects dust into a paste that grinds the sprocket.
The right way: place one drop on each link while turning the pedal slowly backwards, then wipe the excess with a rag until the metal looks dry from outside. Oil works inside the link, not on its surface.
Once a month suits a bike ridden around the neighbourhood. Twice if it sees sand.
5. Brakes: adjusting versus replacing
The adjustment check: squeeze the brakes and push the bike forward. If it moves, they need tightening — the single most important safety check on the bike.
The replacement check: look at the brake pad. It carries moulded grooves; once the grooves disappear, the pad is worn and needs replacing rather than adjusting.
Lever travel tells you as well: if the lever reaches the handlebar before the bike stops, adjustment is long overdue.
6. The four critical bolts
Most faults on children's bikes trace back to one of these four, and a monthly turn with an Allen key covers it: the stem bolt, the seat clamp bolt, the front axle nut and the rear axle nut.
On a tricycle the list differs: no chain and no hand brakes, so the critical points are the stem bolt and the front axle carrying the pedals alone.
With stabilisers fitted, add their bolts to the list. More importantly, make sure both sit at equal height — half a centimetre of difference tips the bike to one side and confuses your child for reasons they cannot name.
7. What shortens a bike's life here: Baby Story notes
- Humidity. It rusts chain, bolts and rims faster than you would expect. Prevention is simple: a dry cloth over the bike after any humid ride, and a drop of chain oil monthly.
- Sun. It degrades plastic, dries the grease in the bearings and cracks tyre sidewalls. Storing in shade adds a year or more.
- Sand. It works between wheel and axle to make pedalling heavy, and worse, it sticks to the brake pad and grinds the rim with every stop.
Our one piece of advice here: after any ride through sand, wipe the rim and the brake pad before parking the bike. Twenty seconds saves a whole rim.
8. Electric ride-ons need different care
The battery is the expensive part, and three habits protect it: never store it fully flat, charge it once a month even during idle spells, and keep it out of a parked car and out of direct sun. The rest sits in rechargeable kids motorbikes.
9. When the problem outgrows your home toolkit
Four cases go beyond home maintenance: a visibly buckled rim, a chain jumping off the sprocket under pedalling, brakes that will not hold after adjustment, or a clicking noise from the pedal area under load.
Everything else is an Allen key, a pump and a rag. The whole toolkit costs less than one replacement tyre.
Before you decide
Routine care is cheaper and quicker than repair. Check tyres fortnightly, tighten the four bolts and oil the chain monthly, and inspect brake pads each season. In a hot coastal climate, keep the bike out of the sun and wipe sand off the brakes.
To browse children's bikes by size, see bikes with training wheels or kids bikes and bicycles. For larger sizes with disc brakes and gears, see bikes for teens and adults. The same sand and sun rules apply to scooters.
