I bought this compressor to inflate things other than my car tires, and it seems to work fine. I haven’t yet tried it on a vehicle tire.
For $10, this was the clear choice over $7 batteries that would probably be dead before I needed to use them again to inflate our Intex air mattress (separate review). I looked at the fittings provided with the compressor, and they didn’t match the mattress, but I figured that I could jerry-rig something, or at worst, return the unit. I was able to make it work for the mattress!
This is a small compressor which is about 4" x 5" x 2.5". It is rated at 300 psi. It claims to be able to inflate a standard car tire in 10 minutes. It comes with a ball needle and two small plastic nozzles for filling swim rings, small pools, etc. The cord that runs from your 12-volt power source (car plug- formerly known as a cigarette lighter) is 10 feet long, and the hose is 2 feet long. The fitting on the end of the hose is like a bicycle pump with a fitting you press over the tire valve, and bar on the top that clamps down to hold it in place. The hose is really stiff. There is an on-off switch on the compressor.
By rigging one of the small nozzles into a medium-size adapter from my inflatable boat, and thus into the air mattress I got it to work. It took 30 minutes to fill the air mattress. Of course a mattress is lower pressure than a tire, but it is much larger.
After I had done this I read the really tiny print that says you are not supposed to run the compressor for more than 10 minutes at a time or it may overheat. There is a warning about holding the compressor because it can get hot. However, when I removed it from the mattress at the end of 30 minutes it was only warm, not hot. But, given that it’s a cheapie, I probably should be more careful about running it longer than recommended. And they want you to let it cool for 25 minutes between 10-minute use periods!
The cord is long enough to reach all the tires on my car, but if you have a longer vehicle and no rear outlet in the car, it might be too short.
There is also a caveat that isn’t mentioned on the outside of the box. If you are inflating a tire that has gone really flat and the seal with the wheel or rim has been broken you will need to inflate it without the weight of the vehicle resting on it. In other words- you will need to remove the tire from the hub.
It does not go back in its original box nicely. You would probably want to buy some other storage container or bag to keep it in.
There were plenty of other, more expensive, heavy-duty choices in the store. But I chose this one. You can usually count on me to try out the bottom-of-the-line! I feel that this economy model will be just fine for my needs, and it passed the first test with flying colors. But I sure wouldn’t trust this for constant or heavy use.