This works very good. I have 265/75 r16 all terain tires and the max psi is 44 and within a minute it pumped it up from 30 to 52 and I realized its too high. This pumps fast. The gauge is 6 or 8 pounds too high if I remember correctly. So just subtract 6 or 8 or have a tire pressure gauge handy. It's not loud at all and doesn't shake very much. If you have to extend a long distance (about to the back of a truck) have someone hold the compressor or figure a way to hold it down due to coil hose
The U bolts were about 1/2" too short.
I had to purchase longer U Bolts locally for 40.00 because yours were too short by about 1/2". The nylon lock nuts liked about 3 threads getting into the nylon locking ring at head of mounting bolts. So, considering I had to pay 40.00 more locally, after tearing down truck, so I could get back on road, they were not a deal. Very disappointed with Belltech. I have purcased half dozen or so products from their name brand and never had problems before.