I bought a cheap Amazon.com trunk rack that goes on the back of an 02' Buick Regal which is our "beater" car.. I load the first bike with the chain ring towards the bumper w/ no issues. It doesn't contact anywhere. I always end up having to use a lot of closed cell foam scraps to prevent the bikes from touching each other in various spots. Every time I load the bikes they seem to go on a little different. I'm more concerned about scratching the bikes than the car. I considered a hitch mount for the truck but we have to drive 30mi. to where we ride and the lousy MPG wasn't something I wanted to suffer.