Hi,
My Honda Harmony 215 lawn mower needs the rear wheels replaced. It is an HRB215 (possibly SDA model). The serial number is: MZBA-6236711. I believe that makes it a "K2" model.
I have found two models of tires that are advertised for the HRB215: the 42710-VE2-M00ZA and the 42710-VE2-800...