The proper air pressure for a soccer ball is usually specified by the manufacturer and can vary depending on the size and type of the ball. The recommended air pressure is typically printed on the ball itself or included in the packaging. However, I can provide you with some general guidelines:
For most standard size 5 soccer balls used in adult matches, the recommended air pressure is usually between 8.5 and 15.6 psi (0.6 to 1.1 bar or 58.6 to 106.4 kPa). The specific recommended pressure may vary slightly depending on the brand and model of the ball.
It's important to note that overinflating or underinflating a soccer ball can significantly affect its performance. If a ball is underinflated, it may feel soft and be more difficult to control, as it won't have a proper bounce and could have an unpredictable trajectory. On the other hand, if a ball is overinflated, it may feel too hard and could have reduced shock absorption, making it uncomfortable to kick or head.
To ensure you have the correct air pressure, it is advisable to use a reliable pressure gauge designed for sports balls. This will allow you to measure the pressure accurately and adjust it as needed. Following the manufacturer's guidelines and maintaining the proper air pressure will help optimize the ball's performance and longevity.