My understanding is that the 4.7 and 4.5 snowshoes are the same tire different label, 238~240mm bead to bead. The 4.8 is 260mm bead to bead, the same as a Bud/Lou.
No doubt this will be a big tire and I doubt it's alone. Lugs look huge but it's hard to say from an obscure angle pic such as this.