Are 30mm tires faster than 28mm?
Aerodynamic Drag In testing: 28mm tyres were ~1W faster than 30mm at 45km/h. W more drag than 25mm. But that drag penalty disappeared on rough roads, where wider tyres rolled faster and more efficiently. Rolling Resistance: Narrower tires (like 28c) can have lower rolling resistance on smooth surfaces like a well-paved road. This means they require less effort to maintain a given speed. In comparison, wider tires (like 32c) may have slightly higher rolling resistance due to their larger contact patch with the ground.
What is the best rim width for 28mm tyres?
Optimised Rim Widths Their research shows that: For 25 – 28mm tires, inner rim widths of 20 – 22mm are optimal. For 30 – 32mm tires, inner rim widths of 24mm provide the best results. Most modern road bikes can fit 32 mm tires, and that is a very good thing. Even featherweight pro racers are on 30 mm tires—a little extra width makes sense for the rest of us. You still get the ‘connected-to-the-road’ feel that makes road bikes so much fun, without harshness, even on rough pavement.
Are 32mm tyres faster than 28mm?
Speed: There’s a trade-off between comfort and speed when choosing tire size. Narrower tires like 28mm can be faster but may not provide the same level of comfort as wider options like 32mm. Think about where you want to strike that balance. The term “700c” is the tire size according to the French system. The “700” is stating the diameter of the bicycle tire and “c” is the width size of the tire. However it’s not 700 millimeters it’s 633 millimeters. Also, another common mistake is that often riders confuse “c” with centimeters.The tyres can differ, but the 28”, 700C and 29er are all the exact same rim diameter. The 700 markings will be followed by the width in mm, and the 28 or 29 markings will be followed by the width in inches. This is the most common wheel size, so look out for familiar markings (such as 28×1.All modern road bike tires are sized as 700C and typically vary in width from 23mm to 32mm. C tires meant for paved roads that are wider than 32mm wide usually are designed for commuter and hybrid bikes. The standard 25mm width offers plenty of grip, rolls fast, and weighs much less than beefy mountain bike tires.Road bike tire FAQ It all depends on your practice. A 700×25 tire is ideal for a good compromise between comfort and performance. A 700×28 provides more stability, while a 700×23 favors speed.
Do pro cyclists use 28mm tyres?
Time was, only a few years ago, that pros raced on tubular tyres at around 23mm wide, pumped up to 100psi or more (that’s over 7 bar). But now, even in races on tarmac, it’s typical to see riders on 28mm or wider tyres, which are likely to measure up even wider on modern wide aero rims. The Rule of 105 states that the rim must be at least 105% the width of the tire if you have any chance of re-capturing airflow from the tire and controlling it or smoothing it. One of the most interesting aspects of the Rule of 105 is that before 2001, nobody was tunnel testing with 21 or 23mm tires.
Why are 28mm tyres faster than 25mm?
You might be surprised to learn that wider tires can have lower rolling resistance than narrower ones—especially at lower pressures. A 28mm tire, when inflated to the appropriate pressure, deforms less vertically and more radially, allowing for a larger contact patch and improved energy efficiency over rough surfaces. Mounting wider tires on your car will increase its handling and maneuvering and optimize its stability. However, it will also decrease its fuel efficiency as the tires are larger and heavier.Further benefits The benefits certainly outweigh the negatives, with wider tyres offering more comfort, especially important for sportive riders and long distance cyclists where prolonged road jarring can cause pain and premature soreness in the contact areas.One of the most significant problems is that they can cause slower acceleration and harder steering. This is because wider tires have more contact with the road, which creates more friction. This friction makes it difficult for the car to move quickly and harder to turn.Big tires do more than just make your bike look rugged, but how? Perhaps one of the most obvious benefits of large volume fat tires is the added puncture resistance. Due to the wider contact area and lower tire pressure, wider tires are inherently less prone to punctures.
What is the best rim width for a 28mm tire?
If the 105% rule (for aerodynamic reasons) is to be followed, it would follow that I need a rim with an external width of around 29-30mm. But most wheels with such an external width, have an inner width of 21+mm. For 28mm tires the recommended inner rim width seems to be 18-19mm (e. The 105% rule says that the external rim width of your wheel should be at least 105% of your tire’s actual measured width. This ratio allows the airflow to remain attached as it moves from the tire onto the rim, reducing drag and making your bike more aerodynamic.As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.The 3% rule states that when replacing tires, the new tire’s diameter should not differ from the original by more than 3%. This guideline helps maintain proper vehicle performance, safety system functionality, and speedometer accuracy.