I would rate this bike rack as my best purchase of the year.

It is very quick and easy to install.

The quick releases work extremely well. I just leave the rack on my station wagon most of the time, taking it only off if I have to put very bulky items into the trunk. So now I can just throw my bike on the car on short notice, without any hassle - which led to a 200% increase in the amount of exercise I get)

I had a rack before that didn't fold down, and I very quickly learned that this is a feature that you simply can't live without (unless your garage is huge), so I returned it after a week of having to take the rack off the car every evening and got the Ridgeline instead.

I have not transported 4 bikes on it yet, but have loaded it up with 3 bikes regularly. I could imagine 4 bikes being a bit of a hassle to figure out how to arrange them without handlebar conflicts. But the 3 always worked out well. I have used the rack with one bike on it on long drives, which included both interstate and bumpy dirt road use, and had no trouble whatsoever with the bike coming loose. I even had the car parked with the bike on the rack during near-Tornado-level winds, and found absolutely no evidence of the bike having banged against the rack or the car.

So, in summary: Love it, couldn't imagine life without it anymore!

This rack is awesome. It has everything you need built into it from adjustments to security I have been very pleased. Bungies be gone....

It keeps the bikes from swaying, holds all angles and shapes of tubes with every angle, spacing, ect. being easy to adjust and locking once the built in straps are closed around the bike. The security locks for the bikes and the car bring peace of mind when parking around town with a loaded rack, and the folding features are great.

The best improvement I think that could be made is the bolt which tightens the rack down through the hitch. It would be much better if this was a pin or hand mechanism which did not require a tool. A second improvement would be that the hitch receiver portion folds up for more compact storage, and third feature to add would be lengthen the arms so a fifth bike could be added as an option.