How often do we check air pressure and inflate air? What is the difference between Natural Rubber (NR) Tube and Butyl Rubber (Synthetic) Tube? What is the Heavy Duty Tube? How long can we keep tire&tube in stock? What is the condition of warehouse for keep tire&tube? When should the rider replace the new tire? How can we choose the compatible tire for motorcycle between hard or soft compound? How often do we check air pressure and inflate air? The rider should check air pressure monthly for butyl tube and weekly for natural rubber tube. Air pressure should adequate to the standard, not too high or too low. What is the difference between Natural Rubber (NR) Tube and Butyl Rubber (Synthetic) Tube? Butyl Rubber’s quality is better and also the inflate air stay longer than Natural Rubber Tube. That’s the reason why the price of Butyl Rubber is higher than Natural Rubber Tube. What is the Heavy Duty Tube? Heavy Duty Tube is made of natural rubber. The thickness of Heavy Duty Tube is 2-3 times thicker than standard tube. This type of tube is designed to absorb big impact and durability. Heavy Duty Tube is specific use for off road tire. How long can we keep tire&tube in stock? Tire&Tube should not be kept more than 3 years. What is the condition of warehouse for keep tire&tube? Tire&Tube should not keep direct to sunlight, water or any chemical. The appropriate place to keep should clean, cool and dry. When should the rider replace the new tire? If the tread of tire wares off until Tread Wear Indicator (TWI) marking or remain around 0.8 mm., the rider should replace new tire. Every time when replace new tire, the rider should replace new tube as well. However, if the rider use tire longer than 2 years, the rider should replace new tire too. Because the compound of the tire will be harder and not good for grip. Remark : TWI marking can see on the tread of tire. How can we choose the compatible tire for motorcycle between hard or soft compound? Soft compound tire has good grip performance. It is good for wet road condition. However, tread of soft compound tire is easy to wear off. Hard compound tire has strong tire structure. It is good for heavy load and rough road condition. However, hard compound tire’s grip performance is not as good as soft compound, so, it is not recommended to use for wet road condition and high speed riding.