I got Si Alloys (16 lbs each)
EDIT:
I went outside and weighed them.
Theyre 16 lbs each.
With tires theyre 31 lbs (15 lb tire)
Ill make the correction above
They are semi-aero
(ignore the purple, its not mine)
Now lets say I would get a pair of Slipstreams (14 lbs each)
So despite that theyre less aero than the SIs
theyre better for mpg because you save 8 lbs total
(a difference of 16lbs looked so much more worthwhile before the edit)
right?