Does it make a difference? I've just been reading a discussion relating to cycling and rotational weight on the internet and there seemed to be a fair bit of disagreement relating to the effect of rotational weight (heavy tyres/rims) and climbing (or cycling in general). As I understand it (and I probably don't understand it very well) static/dead weight (in say a tyre or rim) equates to 3x that when when rotating - heavier tyres require more engergy to accelerate to a given speed. However, I think that they decellerate more slowly too, so the difference in maintaining (not accelerating) a given speed between lighter and heavier tyres is negligable.
How does this work when climbing? One suggestion was that when climbing at a constant speed (not accelerating) it's dead weight that matters, not rotating weight (as you're not accelerating), other people seem to disagree. For the non-racer (where acceleration is important) does rotating weight matter at all?