I "downsized" to 26" tires last week. (I've been running 27" Ripsaws for 2 years.) While the casual riding is smoother and quieter, I am concerned how they will work in the rougher terrain. I have lost ground clearance AND width (stability), along with weight at my base. My rig does seem a bit "peppier" on take off in second gear (I rarely use L around town), and should be livelier on the trails. I would NEVER go smaller than 26", and may regret not going to 28"x10"R-14" on all four corners. Oh, well. Just gives me something to try on my next purchase. Ha!