Just an FYI:
Farm tires use an old sizing system where the aspect ratio is imbedded in the way the size is written. For example a 7.60-15SL is a 95 aspect ratio bias tire that is 7.6" wide on a 5 1/2" rim and 29.5" in diameter. (or at least that is what it is supposed to be!)
So the equivalent to a 215/60R15 is ..... well, there isn't one. All implement tires are really high aspect ratio: 90, 95, 88, etc.
My suggestion to the OP is to do a little research and find out what fits on the wheel you have - paying attention to clearance (especially diameter!) You will need to look at the wheel for its width. It is likely stamped on the back side and should look something like: 6JJ