I really based it on watching Joey and Chris clear obstacles, get up and over Dragon's Back with apparent ease. Those big tires just seem to make rolling so much easier. I'm not talking about on the DCT but just tires on the ground. Also, I likely won't wear out my current Roctane XDs which are 27" so paying for 28" and not wearing them out to then get to 30", just isn't cost effective in my mind. So if I move away from stock size, I believe I'll just go to 30" and get a lift, chop the cage, and get IGR. Why? Because it is what will make this bike be what I want it to be. Do I need it, no. But, I'll be more confident in riding. All this might change next week as I continue to look and think and ride. A second trip to the Takeover will get me more info and solidify where I go with this. So, long winded answer, but these are the things I have thought about. If I had a taller garage door, I would have already done it. Without a doubt.