Winter and Cyclocross tyres / tires

From a On-One forum.
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*I've had up to 38mm cross tyre in mine. It's not ideal as you are literally right on the end of the dropouts to get the tyre clearance you need. A 30mm road tyre will fit in there no problem at all though. *
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So you're most likely stuck with 35's, and the conclusion that you should have bought a crosscheck (room for 45's, ie. those bonty's) ;)