28s on 25mm rims is green on my chart
No it isn't. Unless I'm even more colourblind than I thought I was. He's got 25mm internal not external.
No it isn't
You're right, it isn't. But it should be :) If the tyres were actually only 28mm wide when mounted, it would be marginal, but a "28" GP4000S or Schwalbe Pro One is going to be well over 30mm on a rim that wide.
@gbj_tester started
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No it isn't. Unless I'm even more colourblind than I thought I was. He's got 25mm internal not external.