Valve Stem Replacement
The rubber valve stem in your wheel costs about $3. It also causes more slow leaks than anything else on the car — because nobody replaces it until it fails.
What Is a Valve Stem?
It's the rubber (or metal) tube that lets air into the tire and seals it. Standard passenger cars use a rubber snap-in stem, usually a TR413 or TR414. It's a five-cent part with a fifteen-dollar labor cost — because the tire has to come off to change it.
Why They Fail
- Rubber ages — After 5 years, rubber dries, cracks, and leaks.
- UV exposure — Direct sunlight accelerates rubber deterioration.
- Road salt — Corrodes the metal core inside and weakens the stem.
- Ozone damage — Air pollution attacks rubber over time.
- Physical damage — Hitting a curb can bend or tear them.
Signs a Valve Stem Is Failing
- Slow pressure loss (5–10 PSI per week) with no visible puncture
- Visible cracks in the rubber
- Green or brown crusty build-up around the base
- Wobbling or bent stem when you touch it
- Bubbles at the valve when you soap-test
Replace Them Every Time
We replace valve stems during every tire installation. The cost is minimal, the tire is already off the rim, and it eliminates a huge future headache. There's no reason not to.
Types of Valve Stems
- Standard rubber (TR413): Passenger cars, standard pressure.
- High-pressure rubber (TR418): SUVs, trucks, higher PSI.
- Metal clamp-in: Performance, trucks, high-pressure applications.
- TPMS-equipped: Integrated sensor with valve — replaced as a unit with a service kit.
What Our Valve Service Includes
- Removal of old valve stem
- Installation of a new rubber stem (or TPMS service kit)
- Correct torque for the stem nut (metal)
- Pressure test to confirm no leak
- Cap installation (we use metal caps — they last longer)
Don't Wait for It to Leak
Next time you install tires, ask us to replace the stems — every time. It's the cheapest insurance against a slow leak. Call 301-556-3973.