I use this carrier on my 2004 Chevy Classic/Malibu to carry my Raleigh Talus 2.0 and a Trek 850. Setup is quite easy, just three straps. My car does not have a metal area under the bumper to hook the downstrap to so I just use the alternative method where the stap is placed over the two support beams and then clipped to the bottom of the trunk.I have heard people having issues with straps loosening up, damage to their vehicles ..ect but I have not experienced any of this. There have been no marks from the rack on the car and the straps didn't get loose on me either. However, I do use a bungee to secure the front wheel and another one around the pedal and around the bottom supports of the rack to keep the bikes from swaying. However, the bikes will not come out of the rack and the rack will not loosen up if installed properly.