What’s the difference between a Presta and Schrader tyre valve stem?
Schrader tyres valves are the most common valve stems found on bicycles and car tyres. The most recognizable of the bunch, sometimes they are referred to as standard valves. An easy way to remember if you have a Schrader tyre valve is to think of the “S.” Schrader valves are short, sturdy and standard. If you don’t know what valve stem you have, it is likely a Schrader.
The other most common tyre valve stem type is Presta. Presta tyre valves are traditionally found on higher-end bicycles preferred by professional cyclists. Think of the “P” in Presta standing for professional, performance and premium. If you have a Presta valve, you usually know it.