Do all the 899 / 1199 / 1299 models run the same size front wheel, including disc offset and disc sizes? Are they all inter-changeable? Obviously the rear isnt, what with the 899 double SA. I understand the 1199 wheels are quite a bit lighter than the 899? Just interested to explore options. Wheel weight makes such a difference to performance/handling etc so keen to know details. Anyone know the comparative weights etc? Also, for fear of reprisal, the 899 wheels are quite ugly - my opinion only!!