Review on 🔧 SHOCKTU Portable Air Compressor Tire Inflator Air Pump - Car Tire 12V DC Power Cord Pump with Emergency LED Light & Digital Display - Suitable for Car, Bicycle Tires, and Other Inflatables by Norman Costello

The weather can cause fluctuations in tire pressure so I top up the pressure twice a year. It's great because you can keep it in your car it's so compact and light weight. Plug it into your cigarette lighter and you can inflate it. Just make sure you use the mode selector for the car mode icon. This requires more pressure to inflate car tires. You can set the correct tire pressure. Large digital LED display. It turns off automatically when it reaches the pressure you set. I found it was about a pound or two, so you may need to increase the setting by two pounds. My tires like 33 so I set them to 35 and when I tested them they were at 33. When I had them at 33 they only got to 32 so it's a little off. For now I will use the box it came in.