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In view of the slow air leakage of the tire valves, a layer of valve sleeve can be placed on the outside of the valve core, which can play a certain role in heat preservation and prevent the influence of bad weather on the valve core. Or you can take the time of pumping up to pull out the valve core, and then apply a layer of glue around, but be careful not to block the pores, and then immediately plug it back onto the valve mouth.
The above two methods can solve the slow air leakage phenomenon of the valve core, which mostly occurs in winter, and car owners only need to pay more attention to protection when the weather is cold. Air valve core leakage is a matter of concern, because air leakage in the tires will reduce the speed of the bicycle.