Triathlon Bicycle Tires

Triathlon bicycle tires, as you mentioned, are typically designed to fit 650c rims. While they may sometimes be referred to as “26 inch,” it’s important to note that they are not compatible with tires meant to fit All-Terrain Bike (ATB) or mountain bike rims. Here’s a bit more detail:

1. Tire Size: Triathlon bicycle tires are commonly designated by their rim size, which is 650c. This size is smaller in diameter compared to the standard road bike tire size of 700c. The “c” stands for “clincher,” indicating that the tire is designed to work with clincher rims, where the tire bead clinches onto the rim’s sidewall.
2. Differences from Mountain Bike Tires: Mountain bike tires typically come in larger sizes, with diameters of 26 inches (for older models) or 27.5 inches (650b) and 29 inches for more modern models. These tires are wider and have more aggressive tread patterns designed for off-road use, offering better traction on dirt, gravel, and rough terrain.
3. Compatibility: Due to differences in rim size and tire width, 650c triathlon tires are not compatible with ATB or mountain bike rims. Attempting to mount a triathlon tire on an ATB rim or vice versa would result in improper fitment and potentially unsafe riding conditions.
4. Purpose: Triathlon tires are designed with features optimized for performance on smooth road surfaces. They are typically narrower and have smoother tread patterns compared to mountain bike tires, which reduces rolling resistance and improves aerodynamics for faster speeds on paved roads.
5. Specific Use: Triathlon tires are specifically tailored for use in triathlon competitions and road cycling events where speed and efficiency are paramount. They provide excellent grip on paved surfaces and contribute to overall performance in cycling segments of triathlons.

For triathletes and road cyclists participating in triathlon events or training, it’s essential to use tires specifically designed for road cycling and compatible with their bike’s 650c rims. This ensures optimal performance, safety, and efficiency during races and training rides on paved roads.