Machos and MT are an 80/20 split, but machos beat MT hands down
I run 235/70R15 Colway AT's on my Jimny, but its lifted.  Ive seen on with 225/70R15's on.  its arches were FULL, but it seemed ok.  Did REALLY well on them too.
Mine is a little sluggish on road due to the size, but grips well in all but the most sloppy stuff.
215/70 would be a good substitute for the stock rubber.  it will give a small lift, but would fit and run ithout any bother.
Matt