23mm, 25mm or 28mm? Road Bike Tyre Width Compared

Keen cyclists will already know that different bike tyres are available in different widths. But do you know why this is – or how to identify which is best for your riding experience?

The width of your bike tyres plays an integral role in its performance, in the comfort of the riding experience, in how fast the bike travels, and in how stable the bike is. Both the design of a bike and its frame width impact the kind of tyres that are required – for example, mountain bikes have very different requirements from aerodynamic road bikes.

But this post is all about road bikes, sticking within the boundaries of the thinnest tyres on the market. Here’s how to compare three of the most common widths and why choosing the right tyres is so important.

What Are the Different Tyre Widths Available?

In this blog, we’re focussing on 23mm, 25mm, and 28mm bike tyres, engineered specifically for road bikes.

But it’s important not to forget that the bike tyre market is much broader than this. Tyres can range anywhere from those thinnest 23mm tyres right up to 64mm tyres for mountain bikes – optimising the stability and traction of a bike on rugged terrain.

Typically, the wider the tyres, the more comfortable the ride. So why stick to the thinner end of the spectrum?

Why Are Road Tyres So Narrow?

Narrower tyres are the most popular for racing, for increasing the aerodynamic motion of the bike, and for reducing rolling resistance so as to maximise effort output and speed.

These thinner tyres are also more lightweight, due simply to the lower volume of material used to produce them. And we can’t overlook the fact that thinner tyres are more responsive and tend to react in a more stable and agile way to even the slightest of movements from the handlebars.

So, road tyres are narrow because the nature of road cycling tends to prioritise speed and handling on smooth roads. They are not as comfortable as wider tyres and do not cushion the lumps and bumps of the road in the same way, but they do perform better in cases where efficiency and control are important.

Comparing 23mm, 25mm and 28mm Tyres

Now to the three main widths contained within the road tyre market.

25mm and 28mm are by far the most popular road bike tyres, with the most modern riders tending to lean towards the broader and more stable option of the 28mm even when racing. This can be seen in the way that modern aerodynamic wheels are built for 28mm tyres, which balance speed with comfort.

However, 25mm typically come out on top when simply prioritising speed and optimum agility on a smooth road surface. As such, choosing between the 25mm and 28mm options will depend on the rider, the build of their bike, and what they want to prioritise in terms of performance and speed as well as comfort.

So, where do the 23mm tyres stand?

23mm tyres are, despite being the thinnest and thereby the most efficient by tyre design standards, falling out of favour for several reasons. Not only are they thinner and so the least comfortable from a rider perspective, but they have a much higher risk of puncture and do not offer the same high level of grip as slightly wider tyres. What’s more, 23mm tyres are no longer compatible with modern bike frames, which prioritise the safety of slightly broader tyres – meaning the demand for 23mm tyres has dropped.

What Tyres Should I Choose?

In summary, the right road tyres for you and your bike will depend on what you want to get out of your riding experience – however, in a comparison of the three widths mentioned in the title of this blog, the most popular are the 25mm or the 28mm models.

Many of the top tyre brands manufacture leading road bike tyres that suit your performance, aerodynamic, durability and comfort needs – with our advice being to consider prolific brands like Continental and Michelin as well as lesser known bike-specific brands like Vittoria and Schwalbe.

You can browse the various collections and tyre sizes engineered by these brands and more, over on our individual brand pages. Or why not check out more advice like this in our endless supply of Tyres.co.uk Knowledge Hub blogs and articles.