Valve stem leaking air
If bubbles appear around the valve when you dab soapy water on it, the stem or its core is leaking and needs replacing. It's a small part, but a cracked stem can fail suddenly, so keep the tire filled and get it changed soon.
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Likely causes
- A rubber stem cracked by age, heat and sun
- A missing valve cap letting grit in
- A loose or damaged valve core
- A corroded metal stem on a pressure sensor
- A stem bent or cut by a curb
Try this first
- Dab soapy water on the valve and watch for bubbles
- Put a cap on the valve if it's missing
- Look for cracks around the base of the stem without bending it
- Keep the tire filled to the door-jamb pressure until it's fixed
When to call us
- You see bubbles at the stem or core
- The tire goes flat overnight
- The stem is cracked, bent or broken off
Valve stem replacementAir leaking from the valve? We replace the stem.$55+ $19 dispatch
Call (469) 619-8700 or request online.
In danger or blocking traffic? Call 911 first.
We come to where your car is
Day or night: your driveway, the parking garage at work or the shoulder of the freeway.
Questions
01Do I need a new tire if the valve stem leaks?
Usually not. The tire itself is often fine. The stem is replaced and the tire is filled back to the right pressure.
02Why do valve stems crack?
Rubber stems age like any rubber part, and Texas heat and sun speed that up. A missing cap also lets grit in, which can make the core leak.