I feel kind of silly saying this but...does it matter? they tire type is an r4 or industrial tire and there are many manufatures of them. firestone, goodyear...and the list goes on.
hope this helps.
Those are R4's and the manufacturer is most likely Titan Tire. The rears will most likely be Goodyear and the loader bucket is most likely abused /forums/images/graemlins/smirk.gif /forums/images/graemlins/smirk.gif