Are Wider Tires Always Better for Road Bikes?

In recent years, more and more road cyclists have started using wider tires. However, if we look back at the history of cycling, narrow tires used to be synonymous with speed. In the 1980s, 19mm and 21mm tires were the standard. Even on rough roads like those found in the classic Paris-Roubaix race, cyclists would only dare to use 23mm wide tires. It was commonly believed that the narrower the tire, the lower the rolling resistance, and the faster you could go. But since 2015, more cyclists have gradually switched to wider 25mm tires, and eventually even to 28mm and 30mm. So, is a wider tire always better for cycling?

Tire Width Depends on Your Bike

The width of your tires should be chosen based on your bike. For example, KOOTU road bikes can only accommodate up to 25C tires. If you force a tire wider than 25C onto the bike, it could cause the tire to rub against the frame or fork, especially when the tire expands under pressure during riding. This could potentially damage the frame or fork and even compromise safety. If you own a KOOTU road bike with V-brakes, using tires that are too wide could interfere with the brake components, leading to brake failure or improper adjustment.

Tire Width Depends on Your Riding Purpose and Terrain

Standard Road Riding: If you mostly ride on smooth asphalt roads, tires with widths between 25mm and 28mm are typically ideal. These tires offer lower rolling resistance, which helps maintain higher speeds, while also providing comfort on flatter surfaces.

Comfort and Stability: For long-distance rides or rougher roads, choosing tires between 30mm and 32mm is more suitable. Wider tires provide better comfort and stability by reducing the impact of road vibrations, especially on uneven or slightly muddy surfaces.

Off-Road and Rough Terrain: If your rides often include gravel roads, rural paths, or muddy areas, you might want to opt for even wider tires, such as those over 35mm. These tires offer a larger contact area, increasing traction and comfort, making them more suitable for challenging terrains.

Weight and Air Resistance: While wider tires offer more comfort, they may also increase the weight and air resistance. For cyclists focused on speed, overly wide tires might reduce riding efficiency, especially on flat roads or in competitive racing.