Where'd you hear that? They weren't labelled as such and they'd be very light for a tubeless tyre.
https://www.cxmagazine.com/in-review-greim-pro-tubeless-cyclocross-tire-mud-islabikes
Perhaps I should have kept them then!
@andyp started
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Where'd you hear that? They weren't labelled as such and they'd be very light for a tubeless tyre.