• 18-Inch Inner Tubes

    Discover our complete range of 18-inch inner tubes, designed to reliably replace your original tube with the right fit and performance. This collection covers the most common 18-inch standards (ETRTO 355) as well as more specific formats (ETRTO 387, 390, and 400), helping you avoid compatibility mistakes. From 18x1.00 to 18x2.50, simply match the size printed on your tire sidewall and select the valve type that fits your rim.

Why choose our 18-inch inner tubes?

The 18-inch wheel size is widely used on everyday bikes and more specific setups. While less common than 20-inch wheels, it remains very popular on kids’ bikes and compact bicycles, where maneuverability, comfort, and durability are essential. Our selection of 18-inch inner tubes is engineered to deliver consistent air retention, controlled elasticity, and dependable reliability for both urban riding and recreational use—whether you’re replacing a punctured tube, performing routine maintenance, or taking a preventive approach.

Which vehicles are these inner tubes suitable for?

Depending on the exact tire size, these inner tubes are commonly used on:

  • Kids’ and junior bikes (school commutes, leisure riding, club use).
  • Folding bikes and compact bikes (depending on model and ETRTO standard).
  • BMX bikes and small-wheel freestyle bikes (depending on width and ETRTO).
  • Bike trailers, jogging strollers, and utility carts equipped with 18-inch inflatable tires.
  • Adult balance bikes and specialty wheels, only when the ETRTO size matches.

Important: With 18-inch wheels, compatibility is not determined by “18-inch” alone. The exact size printed on the tire sidewall is critical.

Understanding compatibility: ETRTO first, inches second

Not all so-called 18-inch wheels share the same internal diameter. To avoid fitment errors, always rely first on the ETRTO standard (XX-XXX) printed on your tire sidewall. This is the most accurate way to ensure proper compatibility.

Complete list of technical compatibility

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 sizes:
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

Because inner tubes are elastic, a single tube often covers several tire widths. Use this as a general guide—always confirm with the exact size printed on your tire:

  • Narrow, fast-rolling tires: 18x1.00 to 18x1.35
  • All-purpose tires (city & leisure): 18x1.50 to 18x1.75
  • Wide, comfort-focused tires: 18x1.90 to 18x2.50

The golden rule remains the same: 18-inch diameter + tire width + ETRTO size.

Choosing the right valve

Before completing your purchase, make sure the valve type matches your rim:

  • Presta valve: slim valve found on some bicycles.
  • Schrader valve : commonly used on kids’ bikes, BMX bikes, trailers, and strollers.

Valve type is essential for proper rim compatibility.

Practical tips for installation and durability

  • Replace the inner tube if it shows cracks, a damaged valve, or repeated pinch flats.
  • Lightly inflate the tube before installation to prevent folds and pinching.
  • Inspect the inside of the tire and the rim tape, which are often the cause of recurring flats.
  • Always follow the recommended tire pressure printed on the tire sidewall to reduce puncture risk and improve ride comfort.

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

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