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2. Schrader valve - Wikipedia

   en.wikipedia.org/wiki/Schrader_valve

   The Schrader valve is used on virtually all automobile tires and motorcycle tires and most wider-rimmed bicycle tires.In addition to tube and tubeless tires, Schrader valves of varying diameters are used on many refrigeration and air conditioning systems to allow servicing, including recharging with refrigerant; by plumbers conducting leak-down pressure tests on pipe installations; as a ...

3. Beadlock - Wikipedia

   en.wikipedia.org/wiki/Beadlock

   A beadlock or bead lock is a mechanical device that secures the bead of a tire to the wheel of a vehicle. Tires and wheels are designed so that when the tire is inflated, the tire pressure pushes the bead of the tire against the inside of the wheel rim so that the tire stays on the wheel and the two rotate together.

4. Presta valve - Wikipedia

   en.wikipedia.org/wiki/Presta_valve

   The weakest point of a bicycle rim is usually the hole for the valve stem. The smaller hole for a Presta valve makes it possible to have extremely narrow wheels while maintaining sufficient strength in the wheel. [4] [better source needed] The air pressure in an inflated tire holds the inner valve body shut. A small screw and captive nut on the ...

5. Valve stem - Wikipedia

   en.wikipedia.org/wiki/Valve_stem

   An inflator stem is not used; instead, a removable cap on a valve stem embedded in the tire rim is fitted, with only the cap visible. When inflating the tire, the cap is first removed, typically with a coin, and then a "portable" dedicated inflator stem is screwed onto the valve stem. Through the inflator, the tire is inflated as usual.

6. Tire - Wikipedia

   en.wikipedia.org/wiki/Tire

   [89] [88] Tires are mounted on the wheel by forcing its beads into the channel formed by the wheel's inner and outer rims. [90] [91] Valve stem: Pneumatic tires receive their air through a valve stem—a tube made of metal or rubber, with a check valve, typically a Schrader valve on automobiles and most bicycle tires, or a Presta valve on high ...

7. Direct TPMS - Wikipedia

   en.wikipedia.org/wiki/Direct_TPMS

   All new model year 2008 light vehicles shall have a TPMS (direct or indirect) fitted which is capable of detecting when one or more of the vehicle's tires, up to all four tires, is 25% or more below the manufacturer's recommended inflation pressure (placard pressure) or a minimum activation pressure specified in the standard, whichever is higher.