its your ride and you can run the biggest tire you can fit on it should you wish to, but i think most people on hear would not advise that.
the odd ball in the 2wds is with a auto trans, they turn 200ish higher rpms then a 4wd, and don't have the space for a big tire like a 4wd does.
any thing under 3,200 at 60 with the auto trans is good. a 185/75/14 tire with a auto trans will put it at about 3,400-3,500 rpms
for most 2wds, about 2,600/2,700rpms at 60 is a good number to am for..
for a standard model that's a 185/75/14 tire at 2,600 rpms
for a mpg+ model that's a 195/75/14 tire at 2,700 rpms even though the rpms are higher, being that there's no O\D mpg is the same or better then a standard model.
for more power from a stand still up to speed or on hills, down size those one or two sizes. granted mpg at road speed will suffer a bit by doing so.
a 4wd model with a 4speed 30/9.50/15 tires are needed to get rpms down to about 2,750 at 60mph, there axles are geared the same as an auto trans, but you don't have the slip factor of the auto trans converter that does not lock up.http://www.rocky-road.com/calculator.html