Folding Bikes Wheel Size Debates: 16” or 20”?

When buying a folding bike, one of the first decisions you’ll face is the wheel size — 16” or 20”? Each has its pros and cons. In this post, we break it down simply so you can choose what suits your needs best.

Why Consider 16” Wheels?

16-inch wheels are the go-to for ultra-compact folding bikes. If your top priority is portability, this might be the size for you.

• Ultra Compact: Folds down really small — great for public transport or tight storage spaces.

• Travel Friendly: Many 16” bikes can fit in standard-sized luggage.

• Ideal for Urban Commuting: Quick folding and easy to carry up stairs or into cafes.

You can check out our collection of 16” folding bikes here.

Downsides of 16”

While compact, 16” wheels aren’t perfect for everyone.

• Harsher Ride: Smaller wheels mean you’ll feel more bumps and road imperfections.

• Limited Tyre Options: Fewer choices for tyre width or tread.

• Higher Parts Cost: Because many 16” parts are Brompton-compatible, they can be more expensive.

Why Choose 20” Wheels?

20-inch wheels are the sweet spot for riders who want performance without sacrificing too much portability.

• Smoother Ride: Larger wheels handle uneven roads better.

• Faster Speed (with 451 upgrade): Some 20” models can be upgraded to 451-size wheels for more speed.

• More Tyre Choices: From slim racing tyres to thick all-terrain ones.

• Lower Maintenance Cost: 20” components are common and wallet-friendly.

Explore our collection of 20" folding bikes HERE

Downsides of 20”

• Larger Folded Size: A bit bulkier to store or carry compared to 16”.

• Less Travel-Friendly: Might not fit into standard luggage

Which One Should You Choose?

• Pick 16” if you travel often, need ultra-compact storage, or value convenience above all.

• Pick 20” if you want better ride comfort, speed, and cheaper parts in the long run.

Bonus Tip: Know Your Actual Wheel Size!

Not all 16” or 20” wheels are the same. There are different standards:

• 16” wheels can be 305, 349, or 355. The 349 and 355 sizes are often casually called 18” for easier distinction.

• 20” wheels come in 406 or 451, with the 451 commonly referred to as 22” to avoid confusion.

When buying tyres or upgrading parts, always check the printed size on the tyre sidewall.

Still unsure? Browse our freshly built bikes or drop us a message — we’re happy to help you find the right fit!