How to Choose the Size of Tubeless Tire Valves?
2 Answers
For electric vehicles, tricycles, and two-wheelers, tubeless tires can use either a 1.6 cm small valve or a 1.7 cm medium valve. Motorcycles require a 1.9 cm large valve. Below are the methods to handle air leakage in tubeless tires: 1. Inject Air: When encountering air leakage in a tubeless tire, park the electric vehicle in a suitable position and inject air into the tire. Pour soapy water onto the tire to locate the leakage point and determine the cause. Common causes of leakage include tire aging or punctures from nails. 2. Locate the Leak: After identifying the cause of the leak, if it is due to a nail puncture, remove the nail or other foreign object, then inject an automatic tire repair sealant into the tubeless tire. Shake and rotate the tire to allow the sealant to take effect.
Back when I drove a regular sedan, I didn't realize there were specifications for valve stem sizes on tubeless tires. I casually bought a short rubber valve stem, only to find the wheel hub hole was too large, causing multiple air leaks after installation. Later, a mechanic told me I needed to consider the wheel hub hole size—standard cars can use short TR412 valve stems with a standard inner diameter of 0.453 inches to ensure a proper seal. For alloy wheels, a moderate length of 25-40mm is ideal for easier maintenance, while steel wheels may require longer stems (40mm or more) to avoid difficulty during inflation. I also learned that matching the valve stem color to the wheel enhances aesthetics. The key is measuring the hole size before installation to prevent repeated air leaks and part replacements, which waste time and money. Now, during every maintenance check, I inspect the valve stem rubber for cracks or aging, as damage can lead to unstable tire pressure and compromise driving safety. I recommend beginners consult a professional shop to avoid cutting corners—safety should always come first.
