In recent years, tire width has become a hot topic in road cycling. While 23 or 25 mm tires used to be the standard, today 28 mm and 32 mm are gaining popularity among road, endurance, and even gravel riders. But what are the real differences between these two sizes? Which one rolls better? What about comfort and performance?
In this article, we break down everything you need to know about 28 mm and 32 mm tires, updated to 2025 insights, so you can make the right choice for your riding style.
What tire width really means
When we talk about 28 mm or 32 mm tires, we’re referring to the nominal width. However, the actual measured width depends on the rim they’re mounted on and the inflation pressure. For instance, a 32 mm tire on a wide rim could measure closer to 34 mm. Always make sure your bike frame, fork, and brakes have enough clearance to fit your chosen width safely.
Which one rolls faster?
Contrary to old beliefs, a wider tire isn’t necessarily slower. In fact, when tested at equal pressure, a 32 mm tire can have lower rolling resistance (CRR) than a 28 mm tire. This is because wider tires deform less and better absorb road imperfections.
However, when running both tires at their optimal pressure (lower for 32 mm), the performance gap narrows significantly. On real-world surfaces, 32 mm tires can even outperform 28 mm in terms of efficiency and comfort.
Comfort and control: The 32 mm advantage
This is where the 32 mm tire really shines.
Thanks to its larger air volume, it can be ridden at lower pressures, providing:
- Better shock absorption
- Smoother ride quality
- Increased grip on rough or wet roads
- Reduced fatigue during long rides
If you’re into endurance, all-road, or just value a comfortable and stable ride, the 32 mm tire is hard to beat.
Why choose 28 mm?
If you’re all about speed, aero gains, and racing on smooth tarmac, the 28 mm tire still makes a lot of sense.
It’s slightly lighter, more aerodynamic, and ideal for high-speed performance in road races, criteriums, and fast group rides.
What about aerodynamics?
One trade-off with wider tires is a potential aero penalty. A 32 mm tire has a larger frontal area, which can slightly increase drag, especially at speeds over 40 km/h.
However, with today’s wider, aero-optimized rims, this effect can be minimized—often to the point of being negligible for non-racers.
How to choose
Ultimately, it comes down to your priorities:
- For fast, smooth road riding and races: 28 mm is your go-to.
- For comfort, mixed terrain, endurance rides, or real-world road conditions: 32 mm offers better versatility and control.
Tire maintenance matters
Whichever tire you choose, maintenance is key. Keep your tires clean, check for cuts or embedded debris, and ensure proper pressure.
At Sprayke, we believe in taking care of your bike as an act of love. A well-maintained tire means better safety, longevity, and riding experience.
Choosing between 28 mm and 32 mm tires is no longer about tradition—it’s about riding smarter. With modern tire tech and rim designs, both sizes offer excellent performance. The best tire is the one that matches your routes, your bike, and your riding goals.
And remember: a clean, well-cared-for bike isn’t just faster—it’s a pleasure to ride.
