Was able to get my 4 mtn. bikes on thought I know they rubbed each other, oh well their trail bikes. My big huge problems is the looseness in the hitch. I have a large truck and have to remove the screw in hitch pin to fit my receiver. The amount of play vertically is crazy, the whole thing bounces bad. I had to stop a few times after hitting normal road bumps and make sure the thin walled steel hadn't bent or worse cracked. It took a beating but so did my bikes. It needs to fit tighter in the receiver.