The Up Down Air Inflation System has completely revolutionized the way I tackle tire inflation... My analysis of this automotive product showed that it's incredibly easy to use and takes the guesswork out of getting my tires just right. The system is quick and efficient allowing me to adjust my tire pressure on the fly. However, the only downside is that it requires a bit of installation time, but the benefits far outweigh the effort. Overall, I highly recommend this product to anyone looking for a better tire inflation system..