• 18-Inch Inner Tubes

    Discover our complete range of 18-inch inner tubes, designed to reliably replace your original tube with total confidence. This collection covers the most common 18-inch standards (ETRTO 355) as well as more specific formats (ETRTO 387, 390 and 400), helping you find the correct compatibility without guesswork. From 18x1.00 to 18x2.50, simply select the size shown on your tyre sidewall and choose the valve type that matches your rim.

Why choose our 18-inch inner tubes?

The 18-inch wheel size is found on a wide range of everyday bikes as well as more specialised setups. Less common than 20-inch wheels, it remains widely used on children’s bikes and compact bicycles, where manoeuvrability, comfort and durability are key.

Our selection of 18-inch inner tubes is designed to deliver consistent air retention, reliable elasticity and long-term performance, whether for puncture replacement, routine maintenance or preventative upkeep. They are perfectly suited to both urban riding and leisure use.

Which vehicles are these inner tubes suitable for?

Depending on tyre size, these inner tubes are suitable for:

  • Children’s and junior bikes (school runs, leisure riding, club use).
  • Folding bikes and compact bikes (depending on model and ETRTO standard).
  • BMX and small-wheel fun bikes (depending on width and ETRTO).
  • Trailers, sport pushchairs and carts fitted with 18-inch inflatable tyres.
  • Adult balance bikes and specialised wheels, only when the ETRTO size matches exactly.

Important: with 18-inch tyres, choosing the correct tube is not just about “18 inches”.
The exact size printed on the tyre sidewall is essential.

Understanding compatibility: ETRTO first, inches second

Not all so-called “18-inch” wheels share the same internal diameter. To avoid mistakes, always prioritise the ETRTO standard (XX-XXX) printed on your tyre. This is the most reliable indicator of true compatibility.

Full list of technical compatibilities

Compatible inch sizes:
18x1.00 ; 18x1 1/8 ; 18x1.25 ; 18x1.35 ; 18x1 3/8 ; 18x1 1/2 ; 18x1.50 ; 18x1.60 ; 18x1.65 ; 18x1.75 ; 18x1.85 ; 18x1.90 ; 18x1.95 ; 18x2.00 ; 18x2.10 ; 18x2.125 ; 18x2.15 ; 18x2.25 ; 18x2.40 ; 18x2.50.

Corresponding ETRTO standards:
19-400 ; 28-355 ; 28-390 ; 32-355 ; 35-355 ; 37-390 ; 37-400 ; 37-387 ; 40-355 ; 42-355 ; 44-355 ; 47-355 ; 50-355 ; 53-355 ; 54-355 ; 55-355 ; 56-355 ; 57-355 ; 58-355 ; 60-355 ; 62-355 ; 64-355.

How to choose the right inner tube width

As inner tubes are elastic, each model usually covers several tyre widths. As a practical guide — always confirm using the exact tyre marking:

  • Narrow, fast-rolling tyres: 18x1.00 to 18x1.35.
  • Versatile sections (urban & leisure): 18x1.50 to 18x1.75.
  • Wide, comfort-focused tyres: 18x1.90 to 18x2.50.

The golden rule remains the same: 18 inches + tyre width + ETRTO.

Choosing the right valve

Before completing your purchase, check which valve type is compatible with your rim:

  • Presta valve (narrow): fitted on some bicycles.
  • Schrader valve (car-type): commonly found on children’s bikes, BMX bikes, trailers and pushchairs, depending on the model.

Valve type is essential for correct rim compatibility.

Practical tips for fitting and durability

  • Replace the inner tube if it shows cracking, a damaged valve or repeated pinch punctures.
  • Lightly inflate the tube before fitting to prevent folds and pinching.
  • Check the inside of the tyre and the condition of the rim tape, both frequent causes of recurring punctures.
  • Always respect the recommended tyre pressure shown on the tyre sidewall to reduce puncture risk and improve comfort.

By following these guidelines, you can confidently choose the 18-inch inner tube that perfectly matches your tyre and riding needs.

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