I used this to not only inflate the tires on our two machines, but also the spares - as the spares have not been inflated for over 5 years it took about 5 minutes each time. inflate to the recommended pressure. My wife and I have road bikes with tires that need to be pumped up to close to 100psi on a regular basis. The T-Inflator was just what we needed. It wasn't our first inflator, but definitely the best. Because it's battery operated, I can take it anywhere to inflate bike tires or car tires. Not only is it fully portable, but it inflates faster than other inflators I've had and deactivates at whatever pressure setting I choose. This increases both safety and convenience as a separate pressure gauge is not required for most applications. It's great to see that the device can run all 6 tires + 2 spare tires non-stop and without overheating. I also checked the pressure with my own pressure gauge and it's within 0.5psi which is pretty accurate. I plan to buy three more for my adult children who also need to keep their kids bike tires or other inflatable toys inflated at all times. Finally, I was very impressed with both the quality and the timeliness of the customer service.