Interesting. Joking aside, the fatter tire thing is taking off for sure. How wide is too wide before performance lags? Wheel size is still shaking out. 2.4" tires are about as wide as you can find in a lightweight 26" tire.The WTB mutanoraptor race 2.4 weighed in under 600 grams. Now there is the Plus size tires, which are fat but growing in weight. Where is it headed? I see some advantages to a wide, 27.5" carbon hoop w/eyelets and a lightweight 2.75" or 3" wide tubeless skinwall tire..