Max I ever ran were Schwalbe Pro1 tires: rear 30c, front 28c. So wide road slicks are fine, but you won't get a knobbly 32c CX tire in there.
@SimonFR started
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Max I ever ran were Schwalbe Pro1 tires: rear 30c, front 28c. So wide road slicks are fine, but you won't get a knobbly 32c CX tire in there.