What is the 3% tire rule?
The 3% rule states that when replacing tires, the new tire’s diameter should not differ from the original by more than 3%. This guideline helps maintain proper vehicle performance, safety system functionality, and speedometer accuracy. As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.
What is the 80% rule in cycling?
Cycling performance is not just about pushing as hard as possible; it’s about training smart. The 80% rule in cycling is a strategy designed to maximize endurance and efficiency while minimizing the risk of fatigue and injury. By following this rule, cyclists can improve performance sustainably over time. The 75% rule in cycling training is the idea that 75% of your cycling time should be spent at or below 75% of your maximum heart rate (MHR). This means that most of your training should be at an easy pace, building endurance in zone 1/2. Should everyone train that way, and do the pros train that way?
What is the 105% rule in cycling?
It has often been said that to have good cycling wheel performance, there is a rule that the external rim width of a wheel should be at least 105% of the width of the tyre, or that there is a simple relationship/formula that will predict the aerodynamic performance of a wheel based on rim width vs tyre width. C is the most common tire/wheel size for road bikes. Commuter and gravel bikes often utilize 700C as well. C tires with narrow widths and smoother tread are better for speed on pavement, and larger widths and tread is better for control on rougher surfaces.The 700c (622 mm / 29 inches) is the most common wheel size for road racing. The 650b (584 mm / 27.Tyre diameter Most widths are available from 700c(622) x23 up to 700c(622)x42. With the common size of commuting tyres sitting between 700×25 up to 700x35c. Anything larger than a 700x35c typically affects the speed and rolling resistance outweighing the positives of comfort.The term “700c” is the tire size according to the French system. The “700” is stating the diameter of the bicycle tire and “c” is the width size of the tire. However it’s not 700 millimeters it’s 633 millimeters. Also, another common mistake is that often riders confuse “c” with centimeters.