Make sure that you put the wheel flat on the ground to prevent it from rolling away.Д¤. Use the jack to lift the left or right side of the vehicle (depending on the tireвЂ™s position), then secure the car with jack stands.ДЈ. Do this step before lifting the car because itвЂ™s way easier to loosen them when the vehicle is on the ground.Дў. Loosen the nuts with the lug nut wrench in a counterclockwise direction. Nitrogen inflation costs about $10 per tire, so you want to make sure valve stems and valves on nitrogen-filled tires are sound.1. ItвЂ™s safe, but doing so will destroy the advantages of nitrogen, including lower pressure loss. Avoid bringing up tire pressure in a nitrogen-filled tire by pumping in air. These silver-colored caps also frequently carry a green top surface, often marked N or N2 for nitrogen. Nitrogen inflation requires better-sealing metal valve caps. Using an improper brass valve with an aluminum stem would cause a galvanic reaction that leads to corrosion and eventual valve failure. ItвЂ™s important to remember that if you do use an aluminum stem, the valve must be compatible - nickel plated, not brass. Blue metal high-pressure stems are advisable for high-performance track diving in which speeds top 130 mph. Some owners of high-end aftermarket rims have metal stems installed to better match the look of the wheels. Metal stems usually are not necessary, but they do have a cosmetic value.

Improperly sealed valve stems can allow loss of pressure and contamination by water and dirt, leading to valve corrosion and failure. Valve stem extenders are inexpensive, but they donвЂ™t always seal properly. If your car has wheel covers, make sure the garage mounting your new or used tires uses a valve stem long enough to allow checking pressure with a gauge and refilling the tire without removing the wheel cover. Your repair or tire shop mechanic will know. A rim with TPMS must use a compatible stem - either a snap-in rubber stem thatвЂ™s compatibleВ or in some cases, an aluminum stem.

If you see visible damage when you flex the stem.

Low pressure can also result in uneven, premature wear, which will cost you money when you have to replace a tire much earlier than if it had been properly inflated. Even a slow leak means that unless you repeatedly fill the leaky tire, pressure will dip, affecting handling and possibly leading to a tire-ruining flat. Scuffs against curbs or rocks also can damage them. Improperly replaced wheel covers may cut them. UV rays from the sun, salt, and age can result in cracks.

Valve stems are not intended to last forever. Plenty: As they age more, valve stems could develop leaks, even if there are none now, resulting in premature wear, flats, or damage to a Tire Pressure Monitoring System. What could go wrong?вЂќ What Can Go Wrong With Old Valve Stems? YouвЂ™re probably thinking, вЂњMy old valve stems donвЂ™t leak, so IвЂ™ll just leave them on. It also enables you to lower tire pressure by depressing the valve and allowing some air to escape. The valve allows pressurized air - or nitrogen, if used - to flow into the tire without then escaping. Valve stems are the small tubes on your rims that allow you to re-inflate a tire after pressure is lost or after a tire is repaired or replaced.Д®ach valveВ stem, quite logically, holds a valve.

Tire valve stem