I've had to replace my front tires a couple of times and my rears once.
{The rears, however, were for a different tractor years ago suffering from dry rot}
The fronts that I replaced were for my LS with an FEL and I replaced the same R4 {6-PLYs} dealer installed tires.
They're actually a skid steer tire. Who knew?
The second time, I bought a set on Amazon and had the delivered.
Ya gotta save a buck where you can, eh?
I wouldn't presume to know what tires to purchase for an unknown replacement.
I'm just a nobody scuffling out here lie the rest of us.