Originally Posted by
v70cat
Why the 404's any reasons?
The weight difference between 303's and 404's is right at 100grams for tubulars, (and only 25 grams for clinchers) This is just not going to be significant.
Conversely the rim depth goes from 44mm to 58mm which is going to be aerodynamically significant.
Also in my experience the 404's are more robust.