Now I have only used this 2 cylinder portable air compressor 4 times on tires. This review is what stood out to me so far. 1- The pressure is good, the SUV's tires are inflated faster than I thought. 2- I fitted the hose extension and had enough room to reach all four tires. 3- Both the main hose and the extension warmed up fairly quickly, but the device itself stayed cold. 4- The compressor was noisy but not surprising. Don't expect to be able to have a conversation when the device is on. 5- If you continue to operate the device while disconnecting the tube from the tire, the tire will not noticeably deflate. 6- I ran the compressor from a battery and an internal 12 volt outlet, both worked fine. 7- The built in light helps on dark nights although not as bright as I thought. Overall a good buy, time will tell. He'll see a lot more action this summer. If anything changes I will update this review.