There are several different bicycle wheel sizes available, each with its own specific purpose and application. The most common cycle wheel sizes include:

    12-inch: These small wheels are typically found on children's bikes or some folding bikes. They provide stability for young riders or compactness for easy storage and portability.

    16-inch: Similar to 12-inch wheels, 16-inch wheels are commonly used on children's bikes. They offer a slightly larger size for improved stability and maneuverability.

    20-inch: This wheel size is found on various types of bicycles, including BMX bikes, some folding bikes, and some cruisers. It provides a good balance between agility and stability.

    24-inch: 24-inch wheels are commonly used on mountain bikes designed for younger riders or individuals with smaller stature. They offer improved maneuverability and control on off-road trails.

    26-inch: Historically, 26-inch wheels have been the standard size for mountain bikes. They provide a good combination of agility, stability, and shock absorption on various terrains. However, their popularity has diminished in recent years as larger wheel sizes have gained traction.

    27.5-inch (650b): Also known as 650b, this wheel size has gained popularity in mountain biking. It offers a balance between the agility of 26-inch wheels and the rolling efficiency of 29-inch wheels. 27.5-inch wheels are often found on trail bikes and enduro bikes.

    29-inch: Also known as 29ers, these wheels have become increasingly popular in the mountain biking community. They offer improved roll-over capability, smoother rides over rough terrain, and better traction. 29-inch wheels are commonly used on cross-country, trail, and some downhill mountain bikes.

    700c: This wheel size is commonly used in road bikes, touring bikes, and hybrid bikes. It has a larger diameter compared to mountain bike wheels, providing increased speed and efficiency on paved roads.