Difference Between 23C and 25C Tires-Which One Better ?

Your tires are one of the most critical components on your bicycle because they are the only point of contact between you and the road. However, because many tire sizes are available on the market, deciding which ones are appropriate for your bicycle can be tricky.

The 23C and 25C tire sizes are the two most common tire sizes that you will encounter. We’ll go through the differences between these tires in this article so you can choose the best one for you.

What are the Differences Between 23C Tires and 25C Tires?


A 25C tire has a greater width than a 23C tire in terms of size. A 23C tire has a width of 23mm, while a 25C tire has a width of 25mm.


In comparison to a 23C tire, a 25C tire provides better comfort. Because it is the broader tire of the two, the 25C tire provides a larger air chamber between you and the road, allowing you to lower the pressure without risking a pinch flat. The lower the pressure, the more cushioning you get from the road, boosting your comfort.

Isn’t that very straightforward? You’d expect that a wide, soft tire would be more pleasant than a narrow, hard-inflated tire.

Rolling Resistance

Compared to 23C tires, 25C tires have less rolling resistance, allowing them to roll faster.

The rolling resistance is determined by several parameters: tire width, air pressure, profile, material, and tread thickness. The broader the tires, the lower the rolling resistance. This is because wide and narrow tires have the same contact area at the same pressure. However, a wide tire’s contact area is flattened across its width, whereas a thin tire’s contact area is slimmer but longer. The flattened portion functions as a counterweight to tire rotation. Because the flattened surface of a narrow tire is longer, the wheel tends to lose more roundness and deforms more during rotation. On the other hand, the radial length of the flattened section is shorter in the wide tire, making the tire rounder and hence rolling better and faster.

Therefore, since 23C tires are narrower than the 25C tires, they tend to offer more rolling resistance compared to the 25C tires.

Between the 23C and 25C Tires, Which one Should You Choose?

For a long time, 23C tires were the standard for road bikes. Many racers even chose narrower tires. However, 25C tires have become the most common option for amateur and professional riders in recent years. This is because, as previously stated, these tires offer more comfort and lesser rolling resistance, thanks to their wider width.

Why Stop at 25C Tires?

You’re probably wondering why it is recommended that you stop at 25mm tires, yet the wider the tire, the more comfort it provides and the lower the rolling resistance it provides. Why not equip your sporty road bike with 35mm or 45mm tires?

For starters, they won’t fit on most road bikes; in fact, a few are likely to struggle with the 25mm tires. Second, an extremely wide tire would be inefficient with the existing wheel rims in terms of aerodynamics. Third, bigger tires add to the rotational weight of a wheel, resulting in sluggish acceleration.

Frequently Asked Questions(FAQ)

What Does 700×23c Mean?

700×23c indicates the dimensions of your bike tire according to the French system. The first number, 700, relates to the bike tire’s nominal diameter, measured in millimeters. The second number, 23, refers to the bike tire’s width in millimeters.

The last letter, c, represents the bicycle tire’s width code (width here refers to what you’d observe if you looked at the bike from behind or in front). The “c” bit is rarely used nowadays but was part of the old French classification system that classified bike tire widths from narrowest to widest, with “a” being the narrowest and “d” being the widest.

How Do You Locate Your Bicycle Tire Size?

To determine the tire size of your bicycle, get down on your knees and examine the sidewall of the tire. Looking attentively at the sidewall, you’ll discover some numbers and possibly words etched into the rubber. This might include the brand and the size of your bike’s tires.

What Size of Inner Tubes Should You Buy if Your Bike Uses 700×23c Tires?

Inner tubes for bicycles are usually marked with the diameter and width range of tires that they can be used with. For example, an inner tube labeled 700×18-23  can be utilized with tires ranging from 700×18 to 700×23 in width. So, to know what inner tubes can be utilized with your specific tires size, always check the markings on the tubes.

How Do You Fix Your Bike’s Flat Tire?

A flat tire can be annoying, but it shouldn’t stop you from enjoying your ride. Always carry a properly sized spare inner tube, a simple spare kit, three plastic tire levers, and a hand pump with you when you go for a bike ride. Fixing a flat tire will take 30 to 40 minutes with all items at your disposal.

The five basic steps for repairing a flat tire are listed below:

  • Disconnect the bike wheel from the frame
  • Remove the tire and tube
  • Determine the source of the flat
  • Repair or replace the tube
  • Reinstall the bicycle wheel

What is a 700c Wheel Size

A 700c wheel is a bike wheel having a diameter of 700mm (27.5 inches). Most of the time, these are slender road bike wheels. They do, however, come in a variety of widths, with the majority ranging between 18mm and 38mm.

Can You Replace a 25c Tire With a 23c Tire?

Yes, you can replace a 25c tire with a 23c tire, given that you have the same tire diameter. But since you will be reducing the tire’s width, the comfort of your ride will reduce due to the increased rolling resistance.

Final Verdict

We hope this article has provided you with all of the information you require regarding the difference between 23c and 25c  tires. However, judging which one is superior to the other is a matter of personal taste and preferences.

Abdullah Anas

I am Abdullah Anas, a tire expert. I hate seeing people struggle to find the right tires for their cars. That is why he puts much effort into writing well-researched content about car tires. Today, it’s six years since he started the good work. I have received a lot of positive feedback from his readers and friends. Now my target is to let you understand every detail about all the tires available in the market

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