Review on 🚗 GSPSCN 150Psi Portable Digital Car Tire Inflator with Auto Shut-Off & LED Light - Heavy Duty Double Cylinders 12V Air Compressor Pump for Auto, Truck, Car, Bicycles, RV, SUV, Balls (Titanium) by Stephen Thomas

This little tire pump is good for the price. I tested it on my Ford Transit Van. The front tire pressure is set at 50psi and the rear tire is set at 60psi on one of my rear wheels. was 55psi when reading psi. I connected this pump to my van's battery, started the van and then set the PSI to 60. He pumped the tire back up to 60psi in seconds. BUT…. I disconnected the air hose and used an independent tire gauge which read around 2-3psi. I reconnected it to the tire and pumped it up again. Used the tire gauge again and this time it read 60psi. I can feel the pressure gauge on the tire inflator turn off PLUS the fitting on the air hose to the tire makes a few turns before it detaches from the valve stem and during this time leaks air. So unless you spin very fast you will always lose some air. It is best to inflate 1-2psi and then deflate a little back to the exact psi using a gauge. But for the price and convenience it's very good, I definitely recommend this product.