Originally Posted by max5480

I can't decide between the S2.0 SL and S3.0 SL. The only difference is the 3.0 has 31mm by 19mm rim, (and weighs 70g more) versus the 2.0 which has a 25mm by 20mm rim. Will the aero advantages of the 3.0 make up for the 70g weight difference? I realize that 70 grams is less than 1/6 of a pound and is hardly noticeable...