The frequency at which you need to refill the air in your Yamaha FZ FI motorcycle's tires can vary depending on several factors, such as the tire condition, riding style, and external conditions. However, as a general guideline, it is recommended to check the tire pressure and refill the air every 1,000 to 2,000 kilometers or every three months, whichever comes first.
It's essential to maintain the recommended tire pressure as specified by Yamaha for optimal performance, handling, and safety. The recommended tire pressure values can typically be found in the owner's manual or on a sticker attached to the motorcycle's frame or swingarm.
To ensure accurate tire pressure measurement, it is advisable to use a reliable tire pressure gauge and consult a Yamaha authorized service center if you have any specific concerns or questions regarding your Yamaha FZ FI motorcycle's tire maintenance.