When you say "rally" do you mean full blown sponsorship or?? Because you can rally any car in any way you want actually. I have seen bone stock Evo's Rally on the Tarmac. If you have a Tarmac Rally I think you could do it, you may not be competitive, but you could do it. If your on Gravel, or Snow, that ACD button isn't going to help you. You need more suspension travel, and better rebound and jounce that the OEM suspension can offer, hence the need to upgrade it. Can you put 15" on the X? Sure you can just like the 8/9 but you have to switch your Calipers and Rotors to do it. Do yourself a favor, don't Rally your new X unless your really serious, look for a good used Evo 8/9 if your in the USA and mess with that. Good Luck
