BMC Streetracer with a 23mm Schwalbe Ultremo. I'm guessing no for fitting a 25mm in there ?
Not if you want any paint left. A wider rim (if possible) might drop the tyre profile but then it might have other issues.
@hippy started
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BMC Streetracer with a 23mm Schwalbe Ultremo.
I'm guessing no for fitting a 25mm in there ?