Q Industries MV50 SuperFlow Hi-Volume Air Compressor

It's not on-board air, but man this thing rocks... so much better than any of the 12v cigarette lighter plug in ones you can get. I was using some cheap brand one before... airing up my 35" tires from 20lbs to 40lbs took about 45-60min - with this guy I'm done with all 4 in about 15-20min -- watch out when your done... it's freakin hot.. you won't forget after the first time :)

With a coiled up air line that acts like a spring, the short power cord creates a real problem. It works fine for the side your battery is on, but...the other side is a real problem. Doing everything possible to properly use the full length of the power cord, I found that the coil spring style air line almost ripped out the valve stem from the rear tire. I tried every way of stretching I could to try and ease the stress on the valve stem...but no luck. If you had 2 people to do the job...no problem. One can hold the tension off the stem while the other turns on and watches the pressure guage. Otherwise, look out! There is so much stress on the valve stem, no matter what you do to stretch the stupid (yes I do mean stupid) coil air line...(after all, with a little larger bag, the line could have been made in a non-coil fashion and this would be the answer to all your air inflation dreams!!) As it is, I plan to purchase a cheap set of jumper cables to use to extend the power cord from the pump so I don't rip out the valve stem! Sorry... It could have been a great product but it now turns out to be a pain in the _ss!

I bought this exact compressor from another vendor and it is a piece of junk.
The compressor itself works, but the air hose is inferior.
After my second use, the hose came apart. Very poor crimping on the part of the manufacturer.

This product is made in China which explains the poor quality of teh product.

I would not recommend this product unless you can get it for less than $20, it's not even worth that much.

Wow! I've burnt out two cheapo 12v tire inflators/air compressors which took over ten minutes (in 2 x 5 minute sessions with at least 10 minutes cool down in between) to bring my 265x75x16 Bridgestone LT tires from 25 to 35. This beast (must connect directly to battery) did the job in just over a minute and I didn't have to drop any quarters into it -- yes, it does just a good or better job than your 2 x quarters gas station air pump. The coiled air hose is an added, much appreciated feature. The srew-on tire valve adapter works 100% all the time, versus 75% or so for the clip-on type. The included carry bag keeps the unit clean and handy. Worth every dollar I paid for it!

I run 110 psi in my trailer tires so I needed a cheap portable high pressure compressor for emergencys. it is not fast but it does do the job.