We've run 28mm Continental GP 4000s on our tandem with Dura Ace Calipers with no issues.
And the 28 stands for 28mm wide, although I do understand the actual width can vary.
The "C" in the equation modifies the 700, not the 28, and refers to the fact that the tires are made for 700c rims.
The tire is desiginated 700c 28mm, although admittedly the 28mm is a nominal measurement that does vary by manufacturer, and rim width.
The problem on your Domane may be that it uses Trek's calipers not Shimano
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You could get lost and die.
You could hit a tree and die.
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Last edited by merlinextraligh; 05-24-17 at 03:47 PM.