But, if your vehicle doesn't have TPMS and the valve stem leaks air, you can perform a DIY valve stem replacement using the proper tools. Read more: 12 WD-40 Hacks You'll Wish You Knew Sooner ...

Low tire pressure without a TPMS light could be the sign of a failing sensor. That’s why it’s important to tell customers to ...

The final step is to install a new valve stem. Again, the procedure for this will depend on what tool you have. If you have a valve stem puller like the CKAuto, you'll need a tire iron or two to ...