Do OEM Valve Stems Need to Be Replaced?
3 Answers
When replacing new tires, it is necessary to install new valve stems. This is because valve stems are rubber components and are subject to aging cycles. Although the valve stems may appear intact at the time of tire replacement, they could prematurely deteriorate during the lifespan of the new tires, posing safety risks. Relevant information about tire valve stems: 1. Function: Tire valve stems are one-way valves (check valves) used for inflating or deflating tires with gas or liquid while maintaining and monitoring internal pressure. For tube-type tires, they are mounted on the inner tube; for tubeless tires, they are installed on the wheel rim. 2. Types: Based on structure, they can be categorized into rubber-metal valve stems and metal valve stems with rubber gaskets. The former is used for passenger car tire inner tubes, while the latter is primarily for truck tire inner tubes. The internal structure of tubeless tire valve stems is identical to standard valve stems.
Last time I went on a long-distance road trip, I noticed a slow leak in the tire during a parking check, and upon closer inspection, I found a crack in the valve stem. It turned out the original factory valve stem had been used for nearly six years, and the rubber material had aged, becoming soft and mushy when pressed. I initially thought I could save some money by not replacing it, but the mechanic warned that small issues left unattended could lead to accidents on the highway. In the end, replacing it only cost around a hundred bucks. Now, I make it a habit to check tire pressure every few months and also inspect the valve stem condition. If it feels stiff or shows cracks, I replace it promptly to avoid bigger troubles. Tire maintenance is not something to take lightly—regular upkeep can delay the need for valve stem replacements, ensuring peace of mind, safety, and savings.
I enjoy tinkering with cars and have studied valve stems. The factory ones are usually made of rubber and can become brittle and crack after five to eight years, affecting sealing performance. Before replacing them, I always check their appearance—if they feel less elastic or have cracks, it's time for a replacement. They're not expensive, averaging just a few dozen yuan each, and you can even upgrade to more durable metal ones. Just handle them during regular maintenance—don’t wait until a leak or flat tire becomes an emergency. Also, keep an eye on tire pressure and keep the rims clean to reduce wear on the valve stems, making overall car maintenance easier.
