How does a tire stay inflated




















You might have a pinhole puncture so tiny it is does not even widen enough to let out air until your tire heats when it drives on the road. That temporarily expands the size of the pinhole and also increases the tire air pressure to push out with more force.

If your tire is not perfectly set on the wheel, sand or grit might work its way in between the wheel and your tire, creating a small opening that lets air out. However, like the pinhole situation, a leak where the tire bead meets the wheel can be intermittent and difficult to find. Likewise, if a tire installer does not insert a new valve with the new tire , it increases the chance that it will leak air. In fact, the valve is very often the source of a slow leak and something you want to check with the soapy water.

Whether on your driveway due to a renegade nail, or out on a motorway over a patch broken glass, punctures can occur anywhere. And, more often that not, this will lead to the deflation of your tyres. The valve stem is the small, cylindrical protrusion which needs unscrewing in order to inflate your tyres. If this becomes corroded or damaged, the valve will leak air slowly, leading to the deflation of your tyres.

Always check your tyres after a knock — you never know, they may have become punctured. Extreme weather can cause wear and tear to just about anything, and tyres are no exception. The main problem: heat. When the air expands beyond the limits of the tyre wall, the rubber gives out and the tyre deflates. Sometimes, air will leak from the tyre bead, that is, the rim of the tyre.

This leak can cause the tyre to become flat over time. If a steady stream of tiny bubbles emerges, you probably have a tyre bead leak. It forms a protective covering for the cord body. Information about the tire is printed on the sidewall. This information includes the tire size, load index, and speed rating.

Sidewall rubber compounds are designed to resist damage from ozone, cuts, and snags. The tread is the portion of the tire that comes in contact with the road surface.

The tread's compound and its design have to balance wear, traction, handling, fuel economy, resistance, and other characteristics of the tire. Tread designs vary greatly! For example, Destination LE2 all-season tires need to perform well in both wet and dry road conditions.

They have circumferential tread grooves. These grooves allow water to pass through and stay off the tread. Firehawk GT Pursuit tires are also all-season tires, but they're specially designed for law enforcement and high-speed emergency use. They have an asymmetrical tread pattern. Large tread block elements on the outside shoulder support dry performance, while the inner shoulder is comprised of a greater number of smaller tread elements to improve wet weather and snow traction.

A firm grip starts with your tires. But in reality? It means center tread wear, an uncomfortable ride, and increased risk for a blowout. Note that a few PSI over your recommended tire pressure generally won't put you in the danger zone.

After all, tire pressure fluctuates with the outside temperature. Don't worry—fixing this air pressure problem is a breeze. To get the most accurate tire pressure reading and inflation, follow these steps when your tires are "cold," either in the morning or after the car has been sitting for a few hours.

Topping off warm tires may result in over-inflation. Likewise, checking the inflation pressure when the tires are warm may incorrectly suggest the tires are already over-inflated. Many vehicles have tire-pressure monitoring systems , which will alert you with a TPMS dashboard light when significant underinflation occurs.

The recommended tire pressure is the optimal pressure for tires on your specific vehicle. It's calculated by the manufacturer using the total weight and size of your vehicle, its towing and payload capacity , and recommended tire size.

Sticking to this number can help you get the best performance from your tires and extend tire lifespan.



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