650A rim rigida for tire 36 holes

Everything you need to know about the 650A rim for bicycles: features and specifications

When it comes to choosing the right wheel for your bike, the rim plays a crucial role in performance and riding comfort. Among the many existing sizes, the 650A rim stands out for its specific characteristics. Whether you're looking to replace a worn-out rim or upgrade your bike, here’s everything you need to know about this format.

What is a 650A rim ?

The 650A rim corresponds to a wheel standard often used on vintage city bikes, classic touring bicycles, or certain Dutch bike models. Its internal diameter is 590 mm, which differentiates it from other 650 rims like the 650B (584 mm) or the 650C (571 mm). This format is less common today than other standards but remains appreciated for its compatibility with older frames and its excellent balance between comfort and performance.

Technical features of the 650A rim

• Internal diameter: 590 mm
• Rim width: Varies by model, generally between 18 and 25 mm
• Materials: Aluminum for lightness and corrosion resistance, or steel for increased durability
• Number of spoke holes: Often 32 or 36 holes to ensure good wheel rigidity
• Braking type: Compatible with rim brakes (pads) and sometimes disc brakes, depending on the model
• Tire compatibility: Suitable for tires with a width between 32 and 44 mm, depending on usage

Why Choose a 650A rim?

1. An ideal choice for restoring vintage bikes

If you own a city bike or a touring bike originally equipped with a 650A rim, opting for the same format ensures perfect compatibility with your frame and fork. This allows you to preserve the authenticity of your bike while benefiting from a reliable and efficient wheel.

2. Excellent riding comfort

Thanks to its intermediate diameter, the 650A rim provides good shock absorption, especially when paired with wide tires. It is an excellent choice for urban commutes, leisure rides, and bike touring where comfort is key.

3. An alternative to more common formats

Even though 700C and 650B standards are more widespread today, the 650A remains an interesting option for cyclists looking for a versatile wheel that can adapt to different types of terrain while maintaining good maneuverability.

How to choose the right 650A rim?

Before purchasing a 650A rim, it is essential to check:

• Compatibility with your frame and fork (width and clearance for tires)
• The number of spoke holes to match your current hub
• The braking type supported (rim brake or disc brake)
• The material according to your needs (light and high-performing aluminum, strong and durable steel)

Conclusion

Although less common than other wheel sizes, the 650A rim remains a preferred solution for vintage bike enthusiasts and cyclists seeking comfort and stability. Whether you want to replace a worn-out rim or enhance your bike, choosing a model suited to your frame and riding style is essential. Whether for restoration or improving your city bike, the 650A format offers an excellent balance between tradition and performance !