R7 Tire Inflator Portable Air Compressor, 12V DC Car Tire Air Pump with Auto Shut-Off Function, 150 PSI 3X Faster Inflation Portable Tire Inflator for Car, Bike, Ball, Motor

I bought this compressor to replace an old Craftsman model that is giving problems. I think this one is a bit higher quality than the Craftsman. In particular, the power plug looks higher quality in that I don't expect it to fall apart like the Craftsman plug did. It also has a finger grip that makes the plug easier to grab onto to remove. I also like the fact that the power cord plugs into the compressor. The power cord is of sufficient length for my sedan, but I'll have to run the power cord through the passenger compartment to reach both sides of the car. I figure it'll be a little easier to switch sides by unplugging the power cord from the compressor before swapping sides.I just gave it a test run by inflating my wheelbarrow tire to 35 PSI. It worked as expected. I checked the final pressure with a gauge of known accuracy and it read about 34 PSI instead of the 35 PSI on the compressor readout. Pretty close. YMMV.The Craftsman compressor provided a way to spool up the power cord and hose, but it was a little tedious to do. I will add a Velcro strap to my power cord (the hose has one already) so that wrapping everything up and putting it all into the supplied bag should be quicker and easier than fiddling with the Craftsman. The size is slightly more compact than the Craftsman. I plan to use it on motorcycle trips, and I think the size should out well.One word about the user manual, which is barely needed. Maybe the manual was written for another model and was not updated, and is therefore incorrect. There is no pressure unit button. There is a button label with the letter M, and the manual describes it as the M button with no other references to it. (Gee, thanks.) Turns out that the button is used to select the pressure unit. Really, if you just plug it in and go, you'll figure it out. Just make sure you have your preferred pressure unit selected.

It's not an air compressor, but an inflator. If you're looking for something that works fast like a compressor, you'll be disappointed. But that's the physics of it. I can't haul around my air compressor in my trunk full time, and I can almost be certain there won't be an AC outlet when this type of product is needed. I've used this inflator numerous times, including today when my coworker had a flat that he needed to limp to a tire shop to patch. It's great for a pinch, and even just topping off tire pressure as seasons change. It's not instant, and starts off slow as far as pressure, but once it builds up unreserved pressure, it does really well. My coworkers tire was dead flat, only took about 10 minutes to get the psi to 40 even with an unknown puncture. The other big thing with this unit, it takes up about as much space in the trunk of my car as a 2 liter bottle of soda, and even that is bigger that this inflator in it's case. There may be better ones out there, but I've seen how this one does with multiple uses, I even just now ordered the same one for my fiance so she has that safety of not being stranded

I know this product is great because we own another one for a different vehicle.But this particular purchase came appearing to be used. The tape on the box was cut open, and the foam pads on the bottom of the unit weren't "brand new". Nothing appears to be damaged, but why was it returned? I need to test it... but I also already threw away the shipping box. I should have checked it first.

I recently bought the ROCGORLD R8 Portable Tire Inflator, and I’m seriously impressed. First off, it’s super compact and easy to store in the glove box or trunk. What really sets it apart is the smart AI pressure detection it automatically stops when the set PSI is reached, which makes it incredibly user-friendly.It inflated my car tire from 25 PSI to 35 in just a couple of minutes. The digital display is clear and accurate, and it also has presets for cars, bikes, and even sports equipment, which is a nice touch. The built-in LED light is handy for nighttime use too.Battery life is solid, and it charges quickly with USB-C. I’ve already used it on my car, bike tires, and even my kid’s basketball. This is one of those tools you don’t realize you need until you have it and then wonder how you ever lived without it.Highly recommend for drivers, cyclists, or anyone who wants peace of mind on the road!

I finally replaced the Craftsman automotive air pump that I bought in Kmart long before it went out of business. That air pump was primitive to today's standards having a small and difficult to read gage with no automatic shut off and a tire valve connector that was hard to get on and off. After trying out the new Rocgorld pump I must say I really don't miss the old one at all because the new one is so much easier to use. There are two large digital pressure gages, one showing the tire's pressure, and the other showing the automatic shutoff pressure. The tire valve connector is quick and easy to connect to the tire valve, and the controls are very intuitive. Like the craftsman unit, the Rocgorld is powered off the car battery via a cigarette lighter plug adapter. That may seem inconvenient, but considering that I live in South Florida where flashlight batteries left in a hot car have an extraordinarily short lifetime, the car battery powered pumps are a much better idea. I looked at many but this one really seemed to earn the Amazon Choice award!Update: I had a flat... the first time I used the pump it kept changing the mode (unit of pressure) but the next 4 times I used it before finally getting the tire fixed it worked perfectly. It pumped up my Jetta 16 inch tire from completely flat in 5-6 minutes. I'll keep it!