A CAAD13 is a grand nowadays tbf
What's the tyre capacity on them these days? Last I tested (12) did 30mm easily.
Not tested but you'll have a 32 easily in the disc brake model
32 with guards
You can fit 35s in a supersix
I squeezed a 33 into a 12 rim a few years ago
@Chak started
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A CAAD13 is a grand nowadays tbf