Vittoria Randonneur

Needlessly anal would be worrying about the hubs weight since the rotating mass is right in the middle, thus you won't feel the excess weight of the hubs getting in the way.

Tyres weight, (At least I think so) are the most noticable when riding your bike due to the rotating mass, I don't want to go all C+ and I'm sure someone else here can able to explain it better than I can!

sure for bombing round London it's not exactly bothersome, but coming from Wimbledon to Clerkenwell regularly I did notice a slight 100g weight difference on the rear tyres!

You are trying to say that the moment of inertia of the wheel is more effected by the mass that is nearer to the outside edge of the wheel. It is proportional to the square of the radius for a given mass. Greater moment of inertia, more kinetic energy a wheel has (while spinning a given angular velocity greater than 0).

However after considering the pro and cons of having a large moment of inertia, I must confess it becomes a moot point when patching a puncture at the side of the road.