As a car owner and driving enthusiast, there are few things more frustrating than getting a flat tire or low tire pressure when you’re out on the road. That’s why it’s essential to keep a reliable tire inflator in your vehicle at all times. A portable air compressor allows you to quickly fill up your tires anywhere so you can get back on your way. In this article, we’ll take a look at five of the best tire inflators to stash in your car for those unexpected tire emergencies.

Key Features to Look for in a Portable Tire Inflator Before diving into our top picks, let’s go over some of the most important features to consider when choosing a tire air pump for your vehicle:

  • Power Source: Look for a pump that can run off your car’s 12V power outlet for maximum portability. Some pumps also have built-in rechargeable batteries.
  • Pressure Gauge: A clear, easy-to-read pressure gauge is a must so you can accurately fill your tires to the recommended PSI. Digital gauges tend to be the most precise.
  • Air Flow Rate: The higher the airflow (typically measured in liters per minute), the faster the pump will inflate your tires. Aim for a rate of at least 25 L/min.
  • Auto Shutoff: An automatic shutoff feature that stops inflating when it reaches the desired pressure helps prevent over-inflation and damage to your tires.
  • Hose and Power Cord Length: Longer hoses and cords provide more flexibility in positioning the pump to reach all your tires easily.

1. Viair 85P Portable Air Compressor

Specs:

  • Power Source: 12V DC (car power outlet)
  • Max Pressure: 60 PSI
  • Airflow: 1.26 CFM (free flow)
  • Duty Cycle: 20 min @ 30 PSI
  • Hose Length: 10 ft
  • Power Cord Length: 10 ft
  • Size: 6.75 x 6.25 x 10.75 inches
  • Weight: 4.3 lbs

Pros:

  • Reliable and durable metal construction
  • Decent airflow for faster inflation
  • 10 ft air hose and power cord for good reach
  • In-line pressure gauge with auto shut-off
  • Included carrying case for easy storage

Cons:

  • A bit louder than some other models
  • Higher price point at around $75


2. AstroAI Portable Air Compressor Pump

Specs:

  • Power Source: 12V DC
  • Max Pressure: 100 PSI
  • Airflow: 25 L/min
  • LCD Digital Pressure Gauge
  • Auto shut-off when reached preset pressure
  • Hose Length: 9 ft
  • Power Cord Length: 10 ft
  • Size: 7.5 x 6.7 x 2.7 inches
  • Weight: 2.2 lbs

Pros:

  • Very compact and lightweight design
  • Preset pressure auto shutoff is convenient
  • Digital pressure gauge is easy to read
  • Includes adapters for inflatables
  • Budget-friendly at under $40

Cons:

  • Slower inflation than some higher-powered models
  • Some users report inaccurate pressure gauge


3. Ryobi P737 Portable Cordless Power Inflator
Specs:

  • Power Source: 18V Ryobi One+ battery (not included)
  • Max Pressure: 150 PSI
  • Airflow: 16 L/min
  • Digital pressure gauge with +/- 1 PSI accuracy
  • Auto shut-off at desired pressure
  • Hose Length: 20 in
  • Size: 10.5 x 5.6 x 5.4 inches
  • Weight: 1.7 lbs (without battery)

Pros:

  • Cordless operation for maximum portability
  • Very lightweight and compact to store
  • High 150 PSI max pressure for other uses
  • Accurate digital pressure gauge

Cons:

  • Requires separate purchase of Ryobi battery ($40+)
  • Relatively short air hose at 20 inches
  • More expensive at around $70 (pump only)


4. EPAuto 12V DC Auto Tire Inflator

    Specs:

    • Power Source: 12V DC
    • Max Pressure: 70PSI
    • Airflow: 25 L/min
    • Backlit digital pressure gauge
    • Auto shut-off at preset pressure
    • Hose Length: 2.5 ft
    • Power Cord Length: 9 ft
    • Size: 8 x 5.9 x 4.3 inches
    • Weight: 2.2 lbs

    Pros:

    • Easy to use controls and interface
    • Bright backlight on pressure gauge
    • Decent airflow rate and max pressure
    • Attractively priced at around $30
    • Also has adapters for inflatables

    Cons:

    • Somewhat short air hose
    • Some quality control issues reported
    • Can get hot with extended use


    5. Slime 40026 2X Heavy Duty Tire Inflator

    Specs:

    • Power Source: 12V DC
    • Max Pressure: 150 PSI
    • Airflow: 30 L/min
    • Pressure gauge with auto shutoff
    • Thermal break protection
    • Hose Length: 30 ft
    • Power Cord Length: 10 ft
    • Size: 12.2 x 8.5 x 8.3 inches
    • Weight: 5.5 lbs

    Pros:

    • Powerful inflation with high max pressure
    • Long reach 30 ft coiled air hose
    • Ruggedized construction for durability
    • Protective thermal break feature
    • Includes adapters, carry bag, spare fuse

    Cons:

    • Gauge in handle less convenient
    • Heaviest and bulkiest model
    • Noisier than smaller compressors
    • Most expensive option at over $100

    Additional Tire Inflation Tips

    • Check your tire pressure monthly when tires are cold (driven less than 1 mile)
    • Inflate tires to the vehicle manufacturer’s recommended PSI, not the maximum on tire sidewall
    • Properly inflated tires boost your MPG, handling, tire longevity, and safety
    • Don’t forget to periodically check your spare tire’s pressure too
    • Be careful to not overinflate tires, as this can cause uneven wear and blowouts

    Conclusion

    No one wants to deal with a flat or underinflated tire, but it’s a situation most drivers will face eventually. By equipping your vehicle with one of these top-rated portable air compressors, you’ll be ready to handle any tire inflation issues quickly and easily. Consider your specific needs and budget to determine which tire inflator is the best fit to have on hand in your car for maximum peace of mind wherever the road takes you.