Tire Rack has a good one. As 640k says; use a good stud finder and good lag bolts.
https://www.tirerack.com/accessories/detail.jsp?ID=164
Mine is mounted fairly high (my garage has a 10' ceiling) and it's as high up as I could mount it. That means that I haul tires up/down a ladder. It works, but one year I'm going to put up some type of pulley system to make this easier.