Adult and children’s bikes: how to choose the right model for your journeys, your height and your budget

Buying a bike for adults or children seems straightforward… until you start comparing wheel sizes, frame, brakes, number of gears and, for an electric model, battery range. A bike that’s perfect for a family ride won’t necessarily be suitable for a commute to work or a trip on the trails.

Product listings don’t always make things easier. Some information can be confusing, or even hide important details. Here are the main pitfalls to avoid before placing your order.

Common pitfalls when buying a bike

• Relying solely on the number of gears: 18 gears don’t guarantee a more comfortable ride. The gear range, simplicity of adjustment and the type of terrain are often more important.
• Confusing advertised range with real-world range: on an electric bike, the distance you can travel depends on the weight carried, the terrain, the wind, the temperature, the level of assistance and the tyre pressure.
• Overlooking the frame size: a bike that’s too big makes stopping and manoeuvring difficult. Conversely, a model that’s too small can become uncomfortable on longer rides.
• Forgetting about final assembly: many bikes are delivered partially assembled. The handlebars, front wheel, pedals, saddle and brakes all need to be checked before your first ride.

For a purchase in the UK, also remember to consult the manual and the manufacturer’s information. Check the maximum load, any mandatory accessories and the warranty conditions. For an electric bike, take the time to confirm its regulatory category before using it on public roads.

The parameters to check before choosing

1. Wheel and frame size

A 16-inch children’s bike is generally suitable for children measuring between 105 and 135 cm, depending on their build and saddle height. The Hiland Starry 16-inch is recommended for children aged 4 to 7 years, measuring between 105 and 135 cm. Its low step-through frame makes getting on and off easier.

For an adult, refer to the size chart provided by the manufacturer. The Hiland Alliance road bike is available in sizes S, M and L, with a height range associated with each size. These indications are a good starting point, but measuring your inside leg is still the best way to fine-tune your choice.

2. Braking system

Bikes with disc brakes are particularly popular on uneven trails, descents and when weather conditions change. However, they do require proper adjustment and maintenance.

Rim brakes, like the caliper brakes found on road bikes, are lighter and well suited to urban or road use. For a child, two independent systems can make learning easier: the Hiland Starry combines a front V-brake with a rear coaster brake.

Whichever system you choose, check the condition of the pads or brake shoes, cable tension and wheel tightness before every ride.

3. Type of drivetrain and intended use

• A city bike or a bike for daily commutes should prioritise a comfortable riding position, a simple drivetrain and easy maintenance.
• An adult mountain bike with a front suspension fork and wide tyres will be more at home on trails, mixed surfaces and off-road leisure rides.
• A road bike fitted with 700C wheels and slick tyres is designed for smooth surfaces, not rough terrain.
• A folding bike makes storage easier in a flat, office or on certain forms of transport. However, always check the hinge lock before setting off.
• An electric bike should be evaluated based on its battery capacity, motor, braking system, maximum load and conditions of use, rather than just the advertised range.

Our selection based on your profile

Recommended for: Beginners on a budget

Hiland Starry, 16-inch children’s bike

Why this choice suits this profile: With its single-speed drivetrain and 16-inch wheels, this model is well suited to learning and family rides. It is suitable for children aged 4 to 7 years measuring between 105 and 135 cm.

How this product avoids the pitfall

The listing clearly links the bike to a height range, reducing the risk of choosing a disproportionate model. The chainguard also protects clothes and legs.

Main advantage and key features

Front V-brake, rear coaster brake, kickstand, basket and 16-inch wheels fitted with 1.95-inch tyres.

Recommended for: Premium enthusiasts

ONESPORT OT05, urban electric bike

Why this choice suits this profile: This model combines a 250 W motor, a 655 Wh battery, seven gears and hydraulic brakes for regular urban commuting.

How this product avoids the pitfall

The power, stated top speed of 25 km/h and maximum range of 100 km are listed separately. However, you should still check the real-world conditions of use and applicable regulations.

Main advantage and key features

655 Wh battery, 27.5-inch wheels, hydraulic brakes and 7-speed drivetrain.

Recommended for: Specific uses and heavy users

Hiland H200 Plus, 26-inch adult mountain bike

Why this choice suits this profile: Its aluminium frame, front suspension fork and 18 gears make it ideal for mixed terrain, trails and leisure off-road rides.

How this product avoids the pitfall

The listing states the weight of 15.54 kg, the frame material and the need for partial assembly. This helps you plan for transport and setup.

Main advantage and key features

Aluminium frame, suspension fork, dual disc brakes and 18-speed drivetrain.

Recommended for: Urban users with limited space

OYAMA Skyline 500, folding bike

Why this choice suits this profile: Its aluminium frame, 20-inch wheels and folding mechanism meet the needs of those who want to combine cycling, compact storage and urban transport.

How this product avoids the pitfall

The hinge lock must be checked before hitting the road. The listing also specifies the dimensions once folded, allowing you to check the available storage space.

Main advantage and key features

Shimano 7-speed drivetrain, front suspension fork, front and rear linear-pull brakes and a carry handle.

For quick rides on smooth surfaces, the Hiland Alliance 700C road bike focuses on an aluminium frame, 14 gears and caliper brakes. The Hiland Ridge, on the other hand, prioritises a steel frame, 2.125-inch tyres and a front suspension fork to better absorb uneven surfaces.

Frequently asked questions about adult and children’s bikes

What size bike should I choose for a child aged 4 to 7 years?

The child’s height matters more than their age. A 16-inch model is often suitable for children measuring between 105 and 135 cm, but you should also check the saddle height, step-through height and their ability to reach the brakes easily.

How much does it cost to maintain an electric bike?

The budget depends on how often you use it and which parts need replacing. You should particularly keep an eye on tyre pressure, clean the drivetrain, lubricate the chain and check the brakes. The battery is generally the most expensive component to replace: before buying, compare its capacity, warranty and the availability of a replacement battery.

Is a folding bike suitable for daily commuting?

Yes, provided the distance and riding comfort are compatible with its 20-inch wheels. Pay particular attention to its weight, folded dimensions, locking mechanism and saddle adjustment. For a long journey on the road, a road bike or city bike may prove more comfortable.