What is the difference between Presta and Schrader valves for tires?

[Gilbert]

The differences between Presta and Schrader valves for tires are as follows: 1. Air tightness differs: Presta valves have better air tightness than Schrader valves. The tighter the small ring on top is screwed, the tighter the internal sealing ring becomes, naturally improving the valve's sealing. The sealing of Presta valves is independent of the internal tire pressure, whereas Schrader valves rely on a small spring inside the valve core pulling the sealing core to achieve sealing. The quality of the sealing depends largely on the spring and the sealing pad. 2. Ease of inflation varies: Inflating Presta valves is more cumbersome, while inflating Schrader valves is more convenient. Due to the higher air pressure in road bike inner tubes compared to off-road bike inner tubes, Presta valves are more commonly used for road bikes, whereas Schrader valves are more frequently chosen for off-road bikes.