15 = is the wheel diameter.
8 = is the wheel width
You need to know if the "wheel bolt pattern" is the same as yours... (i.e. 5"x5.5" - like Samurai/Tracker/Sidekick, older Ford trucks, older Jeeps, etc.)
If its the same bolt pattern, it should work.
It also depends on your tire size... you don't want too wide of a wheel on a skinny tire.