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Tire Inflators



A tire inflator is a specific type of air compressor that is specialized for tires. Makes sense right? As with air compressors, tire inflators function by converting electric energy into potential energy which is then stored as pressurized air. This pressurized gas means that there is no longer a need for the strenuous pumping of the manual tire inflators of the past.


PSI= Pounds per Square Inch, which refers to how much pressure your tire compressor is able to put out. For example a tire compressor with a PSI of 150 will be able to fill up a tire faster than a tire compressor with a PSI of 100. 

CFM = Cubic Feet per Minute, which is related to the PSI and refers to the speed at which the inflator releases air into the tire. You may see the term SCFM occasionally with regards to tire inflators, but it is the same as CFM, just with adding Standard Cubic Feet per Minute. 

12- Volt DC = This refers to the powersource for the tire compressor, which is generally the cigarette lighter in your car. 

110-Volt AC= This refers to the power source for the tire compressor being a wall socket. 

Is a tire inflator a worthwhile purchase? This is definitely something to take into consideration, so here are a few reasons why you may find a tire inflator to be right for you. 

Owning your own personal tire inflator means you do not need to go to a garage and pay to fill up your tires. Industry professionals recommend checking and filling tires every month, so the cost can add up. However, it is vital to keep your tires at the correct PSI. If your tires are under or over inflated, the risk of accidents and blowouts increases. Having tires at the correct PSI not only reduces the risks of road accidents, but also reduces a car’s carbon footprint, fuel usage, and it improves handling and control while ensuring your tires last longer. Finally, the freedom of owning your own portable tire inflator means you can safely go on road trips and long drives without getting stranded or needing roadside assistance. 


The most obvious time to use a tire inflator is when you have a flat. In many cases, if the tire can still hold air, a tire inflator will keep you going until you can get a repair or new tire. You may have also seen in your car a pressure warning light going on. This light indicates when the tire has lost 25% of its PSI. With your own inflator, checking and refilling your tires each month (as all responsible car owners should do) becomes easier and more efficient. 


There are many different tire inflators, each one with a unique combination of features. All have standard features that are vital for the functioning of a tire inflator as well as a few bonus features depending on their niche. 

The first standard feature is the power source. With regards to the power source, there are a few different options. 12Volt DC which plugs into your car charging port - this is probably one of the most convenient options since you can keep it in your car and use it on the go, without needing to worry about keeping the battery charged. The cordless tire inflator which runs on batteries - this is helpful in not having to hassle with long cords while keeping the tire inflator compact and lightweight. 110Volt AC plugs directly into the wall socket of your garage or home - this provides a high power charge often speeding up the process of inflating the tire. The final option is a multi powered tire inflator combining multiple options mentioned above.

Inflation speed is the next feature to look at. Some tire inflators have a maximum PSI of 150. This is typically the highest in the range and means it will have the fastest inflation time in comparison to tire inflators with a PSI of 80 or 100. When deciding which PSI you want in a tire inflator, it is important to keep in mind what tires your car uses: size, heavy duty or not, and more. A truck, for example, cannot have its tires filled by a tire inflator that is suited for a Mini, since it would take too long and likely overpower the duty cycle of the tire inflator. 

The size and weight of a tire inflator is also important to take into consideration. Most want the tire inflator to remain in the car to be used in case of emergencies as well as for the monthly refill. Having a compact, lightweight tire inflator can make it easier to fit the tire inflator in the car, especially when filling the trunk before going on long road trips. 

Cords are the next important feature. If you are using a tire inflator with a cord, it is helpful to have a long enough cord that allows you to reach all the tires without needing to move the tire inflator. The desired length then depends on the size of your car. You also want to ensure that the cord is not too long giving the possibility of tangling and tripping unnecessarily.  When looking at the cords it is also important to ensure that it is made from a durable material so that the lifespan of the tire inflator can be guaranteed. This also goes for the actual inflator hose length.  A bonus feature is that some tire inflators also have adaptors that allow you to inflate other household items like blow up mattresses, inflatable pools, and more.

Additionally, In addition to finding a tire inflator with the right length hose for your car, it is also important to find the correct pressure hose chuck. This is the connection from the hose to the air system valve in the tire. Some tire inflators have a screw on chuck, some have a click on chuck and others require you to hold the hose to the pipe manually if the chuck is not strong enough. Finding the correct chuck, that can allow you the freedom to use your hands and do other things while the tire inflator is functioning is beneficial to the overall experience. 

Tire inflators are generally loud and noisy when operating, so another factor to take into consideration is how quiet the tire inflator is. This does not impact the ability for the tire inflator to function properly, however it does impact the comfort in the experience of using it. 

Duty cycle is also an important factor to keep in mind when looking for a tire inflator. This refers to the ability for the tire inflator to work for an extended period of time without needing to shut off to cool down. A 50% duty cycle means that the tire inflator can run for 30 minutes but then would need a 30 minute cool down, as opposed to a 100% duty cycle which can run for a full hour without needing to cool down. 

Almost all tire inflators come with a pressure gauge. A tire inflator that has a built in gauge is helpful for knowing when to stop filling the tire. It also means you do not need to buy both a pressure gauge and a tire inflator, as you have both features in one product. Not all gauges are 100% accurate so make sure to choose a tire inflator with an accurate gauge. There are two types of gauges, analog and digital. The analog looks like a traditional clock and can often be a little harder to read, digital gauges show you a precise PSI number, but these can also be a little inaccurate. If the tire inflator does have a pressure gauge, ensure it is the correct reading for your tire. If the gauge can only read up to 15 PSI, a car tire that is on average 30-35 PSI will not be possible to read on the gauge. Make sure to test first and read reviews to understand the accuracy of your tire inflator’s pressure gauge. 

Another bonus feature that is very handy is an automatic shut off. This means that the inflator will shut off as soon as it has reached the desired PSI. This means you do not need to worry about constantly checking the PSI of the tires and you are guaranteed to not over inflate the tires. This in itself can be dangerous, increasing the risk of a blow out and can cause extreme damage to the tire if the car hits any bumps or potholes in the road.

LED lights or work lights  are another helpful feature on some tire inflators. It helps you fill your tires at night or in dark spaces as well as see under the car. Some of the lights can also function as warning lights. This is particularly useful when you need to pump your tire in the middle of the road and or at night. 

Also, don’t forget a carrying case to help you keep all the cords tucked away neatly and take the tire inflator with you easily on-the-go.

Generally it is also important to look for a good build quality, comfortable easy to read gauge and easy to use design. As always it is helpful to read reviews and rankings of the best tire inflators. 


The first step, before even beginning to use the tire inflator, is to find out the required PSI for your car’s tires. This information can be found in the car manual, or on the car itself. Generally do not look at the tire pressure on the tire itself as that is generally the highest PSI possible, however it is not the ideal for fuel efficiency, safety, and control. Once you know the desired pressure, make sure that the tires are cold. Tires that are warm will measure with a higher than accurate PSI, on average being around 3-5 PSI off, so make sure to take this into consideration when measuring the PSI of the tire. Then you can check the tire pressure to see how much inflation is needed. This is more relevant in tire inflators that do not have automatic shutoff as you would need to check the pressure frequently to make sure the tire reaches the correct PSI. 

  1. Once you have the tire inflator set up, take off the valve stem caps and ensure to keep them in a safe space. They are small and easily lost so keep track!
  2. Connect the air pressure hose to the tire’s air valve system. 
  3. Turn on the tire inflator and wait until the desired pressure is reached. Depending on how much inflation is needed you should be able to see it working. If the tire is near flat or has lost a large percentage of the PSI you should see the inflation quickly, however if it is merely the monthly refill of 1 or so PSI, you might not see a difference. 
  4. If the tire is not inflating check for punctures as you would need professional assistance to help solve that problem. 
  5. Once the correct PSI is reached reattach the valve stem caps and you are ready to drive safely. 

Tire inflators are the perfect tool to help you maintain your car, have great fuel efficiency, and ensure that you can be safe on the go. A tire inflator in your car will give you peace of mind on long road trips and give you the freedom to take care of your car yourself.