650b Wheels vs 700c: Which is Best for Your Ride?

 I’ve been riding bikes for years, and if you’re like me, you’ve probably noticed a rise in the popularity of the 650b wheel size — also called the 27.5-inch wheel. This wheel, which sits between the classic 26-inch and 700c wheels, has caught the attention of cyclists in a variety of disciplines, from road cycling to off-road adventures.

But where did this size come from, and why has it become a go-to choice for many cyclists today? Let’s break it down from a cyclist’s perspective.

Click for details: What are 650b Wheels?

What Are 650b Wheels?

The 650b wheel size (sometimes called the 27.5-inch) has a diameter of 584mm, and when paired with a tire, it typically reaches around 27.5 inches. This wheel is especially popular for off-road, touring, and hybrid bikes due to its ability to support wider tires, which offer enhanced traction, comfort, and control on mixed terrain. It’s become a favorite for gravel riding, mountain biking, and long-distance touring because it provides a perfect balance of speed and comfort on rough roads.

The 650b wheel’s design strikes a sweet spot between the faster, narrower 700c wheels and the smaller, more maneuverable 26-inch wheels. It’s versatile enough for various riding conditions, offering a smoother ride on gravel, dirt, and even rougher terrain.

A Brief History of 650b Wheels

The 650b wheels have been around since the 1930s, originating in France and originally used for urban and cruising bikes. Over time, the demand for wider tires, particularly in the off-road cycling world, brought the 650b back into the spotlight. Today, it’s a popular choice for cyclists who want more comfort and stability without sacrificing performance, especially for those venturing onto mixed or rugged terrains.

Choosing the Right 650b Wheel Width

When it comes to 650b wheels, width matters. The ability to fit wider tires is one of the key reasons this wheel size is so popular. Here’s a quick rundown of what to expect with different tire widths:

• 35mm-40mm: Ideal for light off-roading, city commuting, and road cycling, offering lower rolling resistance for faster speeds.
• 42mm-47mm: Great for gravel and hybrid riding, providing a good balance of comfort, grip, and speed on mixed terrain.
• 50mm-60mm: Best for rougher off-road riding, giving you more shock absorption and traction for tough trails.
• Over 60mm: Rare, but these are designed for extreme conditions like fat biking on snow or sand.

I’ve found that wider tires tend to absorb more bumps and provide better grip, especially on trails or during longer rides. Lower pressure in these wider tires can also reduce vibrations, which helps with comfort, but you do need to watch out for too low a pressure, which can increase the risk of flats or rolling resistance.

650b Wheels vs. Other Wheel Sizes

Comparing 650b wheels with 700c or 26-inch wheels, the differences are clear. The 700c wheels, often found on road bikes, are faster on smooth surfaces thanks to their narrower tires, but they lack the stability and grip of 650b wheels on uneven terrain. The 26-inch wheels are typically lighter and more maneuverable but struggle to offer the same comfort or traction on rough roads. The 650b’s ability to fit wider tires puts it in a great middle ground, making it the ideal choice for riders who need versatility across different terrains.

Why I Love 650b Wheels

Here’s why I’ve made the switch to 650b wheels and why I think they might be the perfect option for you:

1. Comfort: The wider tires provide better shock absorption on rough roads, making my rides smoother and more comfortable. Whether it’s a gravel path or a bumpy country road, the 650b wheels reduce the jarring impact.
2. Better Grip: On trails or wet conditions, the 650b’s wider tires give me more grip, which increases my confidence. I don’t have to worry as much about losing traction, even on slippery or loose surfaces.
3. Versatility: These wheels are great for both on-road and off-road riding. Whether I’m commuting or exploring rugged trails, the 650b wheels handle it all. I love the flexibility to switch between different environments without losing performance.
4. Load-Bearing Capacity: For long-distance rides or bikepacking, I appreciate how these wheels can handle extra load without compromising stability. The wider tires help distribute the weight more evenly, making carrying gear a lot easier.

The Downsides of 650b Wheels

However, like anything, 650b wheels aren’t perfect for everyone. Here are a couple of drawbacks I’ve noticed:

1. Limited Tire Options: Compared to 700c or 26-inch tires, the selection of tires for 650b wheels is more limited, especially in certain areas. While the variety is growing, it’s still not as extensive.
2. Weight: The wider tires are slightly heavier than the narrower ones, which can affect acceleration and climbing speed. For me, it’s not a huge issue when I’m cruising on gravel, but it could be a factor if you’re looking to ride at maximum speed.
3. Compatibility: Not all bikes are designed to accommodate 650b wheels. Some frames and forks may not offer the necessary clearance, especially if they were built for 26-inch or 700c wheels. It’s something to keep in mind when upgrading your wheels.

Final Thoughts

For me, the 650b wheels have become an essential part of my riding experience, especially when I’m tackling mixed terrains or heading out on longer rides. They strike a perfect balance between comfort and performance, making them an ideal choice for gravel riders, bikepackers, or anyone who enjoys venturing off the beaten path.

If you’re looking for a wheel that can handle a variety of surfaces with ease, the 650b wheel might be exactly what you need. Just remember to check for compatibility with your bike before making the switch!