I just got 5 mounted tires all with some tread and some good tread, and one brand new firestone bobcat tires for $400 total. Rims are no rust painted orange. I will use them as spares for my 743 and tires to swap if I buy a 743 with bad tires. Came off a 773 but they are 8 bold and seem to have the same bolt to bolt distance. Question are all orange 8 bolts 10-16.5 rims the same and interchangeable.