Can someone explain this to me, I see it across all frames from all manufacturers. Why would there be only a 4mm in reach between 56 and 58mm, but 32mm difference in stack height? This is for a carbon Diverge.

At 5'11, 32mm pant inseam, 72" wingspan, even though 56mm is the conventional size for me is there a downside to going to 58mm if I prefer a more upright riding position with such a minimal increase in reach?

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