Surprised by all the good reviews on here. Hmmm. Cons: Short hose. Doesn't reach the top of the 19" rim. It's weird that they don't give you a few extra inches. Storage at the bottom of the unit only holds 2/3 of the air adapters. The owner's manual doesn't mention this safe. The PSI accuracy is +1.5 to 2.0 I have checked 2 high end pressure gauges and confirmed it The unit will turn off automatically but will add even more psi than stated above Dials a number then drives for continue one more minute and the PSI value will not change.The storage bag has no zip pocket to store accessories.I can never understand why a company would spend a lot of money on engineered products that are not easy to manufacture but have common sense and cost effective Things that are easy to integrate ignores the top of my tire because it sits higher I also checked the PSI and it stayed at 38 PSI both my gauges are showing 38.3. So far, so good! Another bonus, $15 less!