A first bike is mostly a fitting problem

Almost everything that goes wrong when a child learns to ride comes down to a saddle too high, a bike too heavy or a helmet sitting too far back. These guides are about getting those right, so the riding part can be the easy bit.

Who this is for

Parents, grandparents and carers teaching a child between roughly two and ten, in a flat or a terraced street rather than on a country lane. Every guide assumes limited storage, limited traffic-free space and no workshop.

The order below is roughly the order the questions come up: which bike, what size, how to teach it, and how to fit the one piece of kit that matters.

Guides

• Balance bike or training wheels: what each one teachesThe two routes teach different skills in a different order. Which one suits a child depends on age, on the streets nearby and on how much of the process you want to repeat.
• Sizing a first bike by inseam, not by ageWheel size charts sorted by age are the reason so many first bikes are too big. Measure the child instead: one number decides almost everything.
• Teaching a child to ride in a single afternoonTake the pedals off, find a gentle slope and stop holding the saddle. The method takes about two hours and the hardest part is the adult's instinct to help.
• Getting a child's helmet to actually fitMost children's helmets are worn too far back and too loose. Three adjustments, in the right order, fix nearly every badly fitted helmet in about two minutes.
• Setting up brakes a small hand can actually pullMost children's bikes leave the factory with levers set for an adult hand. Two adjustments with a hex key change how confidently a child rides.
• Where to practise when you live in a cityThe ideal learning space is flat, empty, gently sloped at one end and boring. Six kinds of place that fit, and what makes each of them work or not.
• Why a bike's weight matters more than its gearsA typical supermarket bike is over half the weight of the child riding it. That ratio explains more refusals to ride than any other single number.
• Checking a second-hand children's bike in ten minutesChildren outgrow bikes long before they wear them out, so used is usually the better buy. Eight checks that separate a bargain from a project.
• Teach stopping before you teach goingA child who knows they can stop will try things. A child who is not sure will freeze at exactly the wrong moment. Five drills that build the skill in order.
• Riding together on city streets: positions and habitsWhere the adult rides changes what the child can do. Four positions, when each one works, and the handful of habits worth building early.
• The maintenance a child can do themselvesFour jobs a six-year-old can own, one they can help with, and the ones to keep for an adult. Ownership of the bike changes how much it gets ridden.
• The signs a bike has been outgrownChildren rarely say the bike is too small; they just ride it less. Five signs to look for, and how to get another season out of one that nearly fits.