The PT part # for the whole assembly (tire and wheel) is: (Bar tire) m15134x4; (Turf tire) m15134x2. Both bar and turf assemblies are $201.69 each. Obviously a set of four is $806.76. Did I pay too much?
Three posts to answer your question. Not very efficient. Anyway, I ordered single tires for both turf and bar (26x12x12), both are 58" wide on the 1845. Duals are much wider.
<font color=blue>Did I pay too much?</font color=blue>
In looking around on the web I think the tires can be purchased for around $70 each, perhaps a little more or a little less depending on the ply rating and the load rating. I don't know the specs on the wheels and in any event I have not found a source.