Measure it.
How far from the axle will the horizons be widest do you reckon? 330mm ish? I'll have a look tonight.
Cheers
scroll up for the WTB cross section image and the rim will be 19mm smaller in radius .. could be tight, use a caliper .. also if 47mm dont fit there are 44mm gravel kings (slick).
@Heitzman started
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Measure it.