AFAIK there is no such thing as 27" Tubulars.
The wheels you have are almost certainly 700c "Sprints".
You may struggle with clearance on any tyre above 23mm
@ph1 started
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AFAIK there is no such thing as 27" Tubulars.
The wheels you have are almost certainly 700c "Sprints".
You may struggle with clearance on any tyre above 23mm