I have just bought a small, Boardman Pro Carbon SLR. The medium size, on the Boardman site, is advertised at 7.3kg. Halfords, and review sites, including this one, have it at tiny fraction over 7kg. When I got it home I weighed it and it showed 7.8kg. The Halfords shop have weighed it with the same result. That's a massive difference. Boardman have told me and Halfords that the difference is an acceptable tolerance and could be down to; paint, wheels, saddle etc.
Any one got any thoughts?