This small pump is surprisingly powerful. I had a tire that was almost completely flat and I was able to inflate it to full pressure in about 5-6 minutes. All I had to do was plug it in, set the ultimate pressure and let it run. Eventually I had to connect, but nothing major. I also like that this pump takes up very little space. Two things to note. First, it shows pressure in metric units, so be prepared to use a converter if necessary, and second, it's loud. I don't know of any compressor that is so quiet that this little gem could squeeze out a few decibels. Also, I find that the price and small size make it ideal for storing in the trunk in case of an emergency.