Rear wheel 650A

Everything you need to know about the 650A rear wheel for bicycles: features and specificities

When it comes to choosing a 650A wheel, many cyclists wonder about its dimensions, advantages, and usage. Often associated with city bikes and touring models, this wheel size has unique characteristics that set it apart from more common standards such as 700C or 26 inches.

What is a 650A wheel ?

The 650A wheel refers to a rim standard mainly found on city bikes, some folding bicycles, and older touring models. It has an internal rim diameter of 590 mm (according to the ETRTO standard), which makes it different from 650B or 650C wheels, which sound similar but are not the same in size.

Main features of a 650A wheel

• Internal diameter (ETRTO): 590 mm

• Compatibility: tires in 650 x 35A, 650 x 38A, or 650 x 42A depending on the model

• Typical use: city bikes, touring bikes, vintage bicycles

• Comfort: wider tires provide better shock absorption and smoother rides

• Durability: built to withstand daily use, often with luggage racks or baskets

Technical specificities of a 650A wheel

A wheel consists of several essential components: the rim, the hub, the spokes, and the tire. On a 650A rear wheel, you also find a freewheel or a cassette, depending on the drivetrain system. This requires extra strength in the hub and specific lacing to ensure rigidity and reliable power transfer.

• Rim: usually made of aluminum, lightweight and resistant to corrosion

• Rear hub: available with threaded axle or quick-release axle, depending on the model

• Spokes: often stainless steel for greater durability

• 650A tire: available in different widths, offering a balance between efficiency and comfort

Why choose a 650A wheel ?

The 650A wheel is an ideal choice for:

• Vintage bike enthusiasts, who want to preserve the authenticity of their bicycle

• City bike riders, who prioritize comfort and stability

• Touring cyclists, riding mostly on urban or slightly uneven paths

Another advantage is the availability of spare parts (tires, tubes, rims), which makes maintenance easier and extends the life of the bicycle.

Conclusion

The 650A wheel stands out for its versatility and comfort, especially appreciated in urban environments and on classic bicycles. Whether for restoring a vintage bike or equipping a city bicycle, it remains a reliable option for enjoyable and safe riding.