What is the diameter of a valve stem?

For most “old car” applications the valve stem hole in the wheel rims come in 3 sizes, which are nominally: – 8mm diameter, observed on some small and Voiturette cars (as well as motorcycles which often had the same tyre sizes).

Are all valve stems the same diameter?

Are all Valve Stems the Same? No they are not. A rim with TPMS will have a different stem than a rim without one. The TPMS ones are usually compatible with the system, either a snap in rubber version or sometimes an aluminum one.

Do Schrader valves come in different sizes?

Industrial Schrader valves are available in different diameters and valve core variants and are used in refrigeration, propane, and a variety of other uses. A new development is Schrader valve stems with integrated transmitters for tire pressure monitoring systems (TPMS).

Are there different size Presta valves?

Presta valves come in different lengths too. Presta valve inner tubes are available from a range of makers with valve lengths up to 80mm. There’s no harm in using a valve longer than you need, although it might look a bit odd to use a particularly long valve on shallow wheels.

Are metal valve stems worth it?

‘Metal stems are the way to go. They will not dry rot over time and are a more sturdy stem. Rubber stems are recommended to be replaced every once in a while.

Are metal valve stems bad?

Think mine are aluminum, so those be OK.. Go with plastic. The metal (either steel, stainless, or aluminum) will cause a chemical bond with the valve stem over time. Anytime you put dissimilar metals together you can expect a long term reaction, be it chemically “welded” or the opposite, corrosion.

Are aluminum valve stem caps bad?

The type metal of a valve stem cap should be the same as the stem – brass on brass (it can be plated chrome), steel on steel (SS Ok if you clean & lube it regularly), aluminum caps should be avoided unless in arid area.

How big is a stem hole for a tire valve?

For example, in some cases wheels with a .453-inch stem hole may not have a large enough coined or machined area around the stem hole. On this type of wheel, the coined area must be a minimum of .125 inches greater in diameter than the valve hole.

What’s the maximum pressure of a valve stem?

This can cause the valve stem to crack, blow out of the rim hole, or become unseated. This can usually be corrected by installing a TR600HP or TR801HP high-pressure snap-in valve stem instead. These valve stems are rated at 100 psi (6.9 bars) maximum.

What are the grooves in a valve stem?

The groove in a valve stem, seemingly unimportant, in reality is vital to the success of a valve’s performance. Imperfectly formed grooves, inferior or mismatched locks, and improper retainers can lead to catastrophic failure. The so called “conventional” or square groove design has enjoyed enormous success.

When to use metal clamp in valve stems?

Metal extensions are for metal clamp-in valve stems only, and the extensions should be no longer than necessary. If a vehicle will be used on- and off-road where the stems may come in contact with mud, snow, ice or other objects, it’s always best to use sturdier metal clamp-in valve stems as short as possible.

What kind of valve stem do I Need?

If your vehicle has a tire pressure monitoring system, you’re going to want a nickel-plated valve core, because brass valve cores within aluminum valve stems can cause corrosion. No matter what type of vehicle you drive and what type of tire valve stems you have on your wheels, it’s important to always use valve caps.

What are the different types of tire stem?

Before you buy, be sure to take a few moments to get to know the tire valve stem varieties, caps, cores and more. Generally speaking, there are three basic types of tire valve stems: Tubeless rubber snap-in valves. High-pressure tubeless snap-in valves.

What is the diameter of a valve stem?