In order for our vehicles to run smoothly and carry us to and from our various destinations, they rely on an incomprehensible number of parts. While large, well-known parts — like the engine, ...

We may receive a commission on purchases made from links. The valve stem that protrudes outside of a wheel does not last forever and requires periodic replacement. The tire valve stem houses the valve ...

I took my 2008 Audi A4 for routine maintenance. The dealership informed me that they could not check my tire pressure because I had "aftermarket valve-stem covers." I was confident that I didn't, ...