If 23 clinchers won't fit, 23 tubs won't fit either. There is also very little choice in 23mm tubs. Vitoria Rally and Evo Pista CS are about the only 23's I know of. 22mm is standard 'wide' tubular.
@gizmond started
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If 23 clinchers won't fit, 23 tubs won't fit either. There is also very little choice in 23mm tubs. Vitoria Rally and Evo Pista CS are about the only 23's I know of. 22mm is standard 'wide' tubular.