I have a pair of those R45 rims and 25mm GP4ks came out at 28mm on them. 23mm GP5k or 23mm Vittoria Corsas end up at 25mm. FYI.
Good to know. By the sounds of it R45 is the right choice for me, much as I'd love to have a wider rim.
@gdkhgd started
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I have a pair of those R45 rims and 25mm GP4ks came out at 28mm on them. 23mm GP5k or 23mm Vittoria Corsas end up at 25mm. FYI.