The debate over disk brakes vs. rim brakes in wet conditions is a complex one with various factors at play. Disk brakes do typically offer better stopping power in wet conditions, since they don't rely on rim surface contact to stop. This means that disk brakes can perform consistently, regardless of road conditions.
However, it's true that disk brakes can experience overheating in prolonged wet conditions, which can lead to a temporary decrease in braking efficiency. This phenomenon, known as "brake fade," is a common issue with disk brakes, particularly in mountain biking.
Regarding the argument about rim brakes being just as effective in misty conditions, it's important to note that rim brakes can be less consistent in wet conditions. This is because the brake pads need to squeeze the rim to generate stopping power, which can be compromised in wet conditions if the rim is covered in water or mud.
Ultimately, the decision between disk brakes and rim brakes will depend on your individual needs and preferences. Disk brakes may offer better stopping power and consistent performance in wet conditions, but they also come with a higher cost and weight. Rim brakes, on the other hand, may be more affordable and lighter, but they may not offer the same level of stopping power in wet conditions.
In terms of hard data, there have been numerous studies comparing the performance of disk brakes and rim brakes in wet conditions. For example, a study by the German automotive testing organization ADAC found that disk brakes offered better stopping power and consistency in wet conditions compared to rim brakes. However, it's important to note that these studies may not account for individual factors such as rider skill level, bike setup, and maintenance.
In conclusion, disk brakes are not a marketing gimmick, and they do offer better stopping power and consistency in wet conditions compared to rim brakes. However, they also come with a higher cost and weight. It's up to each individual rider to weigh the pros and cons of each braking system and decide which one is right for them. I encourage everyone to share their thoughts and experiences with both disk brakes and rim brakes to help inform this ongoing debate.