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Let's be honest…
Not so many years ago, most road bikes ran 23 mm tyres inflated to more than 8 bar. The narrower and harder a tyre seemed, the faster we thought it would be.
Today things have changed completely.
Pro teams, wheel manufacturers and the leading tyre brands have shown that a wider tyre can roll just as fast or even faster, while also offering more comfort and far better grip.
However, when it is time to change tyres, the same question comes up again and again.
Is it better to run 28 mm or make the jump to 30 mm?
The answer does not depend only on performance.
The type of rides you do, the road surface, your weight, the pressures you use and even the internal width of your rims all play a part.
At 33 Bike we get this question practically every week. That is why we have prepared this guide to help you choose the width you really need and get to know some of the most recommended tyres on the market, such as the Continental Grand Prix 5000 S TR, the Pirelli P Zero Race TLR and the Trek RSL Road TLR.
Why are more and more cyclists abandoning 25 mm tyres?
Until a few years ago it seemed unthinkable to race on a 30 mm tyre.
Today it is a common sight even in the WorldTour.
The explanation is simple.
A wider tyre lets you run lower pressure, increasing the contact patch with the road without penalising speed. This means better cornering, greater absorption of bumps and a much stronger sense of security.
In addition, by reducing the vibration that reaches the rider, it also lowers fatigue on long rides.
It is not just about comfort.
It is also about performance.
🔧 Tip from the 33 Bike workshop
One of the most common mistakes is thinking that a narrower tyre always rolls better.
In reality, excessive pressure makes the wheel bounce constantly over small imperfections in the road. That lost energy also costs speed.
In many cases, moving from a 25 mm to a 28 mm tyre brings an immediate improvement in both comfort and efficiency.
28 mm or 30 mm tyres: what are the real differences?
Although there are only 2 millimetres in it, the way the bike behaves changes more than many people imagine.
| Feature | 28 mm | 30 mm |
|---|---|---|
| Aerodynamics | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Comfort | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Grip | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Puncture resistance | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Weight | Lighter | Slightly heavier |
| Recommended pressure | Higher | Lower |
On well-surfaced roads, a 28 mm tyre is still an excellent option for those who prioritise a very sporty ride.
However, if your rides include back roads, broken tarmac or long gran fondos, 30 mm offers extra comfort and control that you notice from the very first kilometres.
🛒 Already know which width you need?
At 33 Bike you will find a selection of high-performance road tyres in 28 mm and 30 mm from the best brands on the market.
👉 Explore our road tyre category and find the perfect model for your bike.