Where I live/work with my 700 I have to navigate a LOT of rocks and rocky roads. Clearance becomes a real issue and I have unfortunately banged the front and/or bottom of my 700 many times. I just need an inch or two more to clear the vast majority of rocks I encounter. Now, knowing that the 700 is not exactly a powerhouse when it comes to its' engine, I have a question for those of you who have gone to 26 or 27 inch tires instead of the stock 25 inch; has the extra tire height had a noticeable negative impact on performance or handling? Your comments would be appreciated......