Install is very easy....I did mine myself....however I would recommend that you get someone to help you to hold the boards in place so that you can put in the screws or plastic push rivets. At first I used the black screws the boards came with for the top portion, however, I quickly realized they are not stainless as they began to rust and stain the boards. I replaced the screws with the plastic push rivets described in the thread below (take a minute and read through the entire thread) and they have worked out great. For the side, I went to the local marine store and purchased stainless steel screws (2 for each board). The plastic rivets are the best way to go.

http://www.xoutpost.com/x5-e53-forum/...ng-boards.html

By the way, for those of you wondering about how pronounced the "X5" logo is....you have to really look for it to realize it's there. Certainly when I show pics of the boards on the "X5" spot you see it, but when you look at the vehicle overall, the boards blend in really nicely. Good Luck!!