Originally Posted by
cyclintom
It is rather a shock to people who think that narrow high pressure tires roll so good. At high speed they do. So how often are you descending at 40+ mph? But riding at normal street speeds it's almost impossible to tell the difference in rolling resistance and it's very easy to tell the difference in ride comfort.
I agree with it being hard to tell the difference in rolling resistance. When I switched my tires on my commuter last fall I THOUGHT that my winter tires rolled slightly better. When I switched them a few weeks ago back to the summer tires, I THOUGHT that the summer tires rolled better. Not quite the placebo effect, but I don't know the actual words for it.