While it’s often mentioned that Bike Disc Brakes can lead to designs with more tire clearance, the reality for TT/Tri bikes is a bit nuanced. Design engineers aren’t always maximizing this aspect, meaning you might not see drastically larger tire options compared to rim brake models. Clearance for tires beyond 28mm might not be a given. However, focusing solely on tire clearance misses a key point: the enhanced comfort even a 28mm tire provides is significant and shouldn’t be underestimated for triathlon cyclists. Many riders find fitting even a 28mm tire challenging with rim brakes, especially on older frames. Disc brake triathlon bikes often provide a more comfortable fit for 28mm tires, particularly when paired with wider, modern rims, leading to a smoother, faster ride.
Beyond tire considerations, the improvement in braking performance is a major advantage of bike disc brakes. It’s a common argument that aggressive braking isn’t paramount in triathlon racing. However, most triathletes use their triathlon bikes for training rides as well as races. Whether navigating challenging training routes on open roads or simply seeking more reliable stopping power in varied conditions, disc brakes offer a superior feel and enhanced control. This improved braking translates to a more enjoyable and safer riding experience, boosting confidence in all conditions.
Looking ahead, choosing bike disc brakes essentially future-proofs your wheel compatibility. The cycling industry is clearly moving towards disc brakes. Major brands are increasingly releasing flagship road bikes as disc brake only models, and wheel technology is following suit. The emergence of disc brake-specific wheelsets, like the Zipp 303 and Roval Rapide, underscores this trend. While deep-section wheels and rear discs might take a bit longer to fully transition, within the next few years, finding new rim brake wheels, especially performance-oriented deep-section options, from major manufacturers will become increasingly difficult. Embracing disc brakes now ensures compatibility and access to the latest wheel innovations in the future.
