Originally Posted by El Chaba

Just a few comments on tire width, rolling resistance, etc. As for “testing” of rolling resistance, I am yet to see a truly scientific test. The “fastest” tires are invariably what the industry is selling at whatever point in time. When pros (like Pogacar”) are using tires in the 30-32 mm range, rolling resistance is one factor, but at professional racing speeds, aerodynamics become increasingly important. With the modern racing bike and its uber oversized tubing, there is a fairing effect that comes along with fatter tires. The wider tires are also useful to dampen the stiff ride that results from very stiff oversized carbon tubing….and there is likely a performance advantage as well. If you are riding a thinner tubed steel, aluminum or carbon frame, you may very well be better off with narrower tires.