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@amey said to me (either in this thread or the 'dale one) that it would work with open pro's. Pretty unlikely it will work with 23mm rims though - since that's basically asking if they will fit 28mm tyres and mudguards.
@edscoble said he just managed to fit 28's in on their own.You're quite light though right? Why not go for 23mm tyres - they still come up pretty massive on wide rims (almost look bigger than a 25mm on a regular rim).
I am 100% sure that this has been answered before but... PDW Fenders / CAAD10 / 23mm wheels. Can I fit 25c under 'em?