I really like these airbags. They are very affordable and they did exactly what I wanted. I have a 2012 Toyota Prius and I use my Prius as my truck. So it actually helps to stabilize the ride in the back instead of going down. If I'm not carrying a lot I just keep it at 15psi and that's fine. I bumped it up to 40psi when I had a lot of stuff in my back. Highly recommended