I am sure that you need a pull to run 17*9 with a offset.

Stole this pic off zilvia, 17x9 +17
4 degrees of camber
~10mm pull
25mm spacers
215/45/17

Please search next time, if you are trying to find something about 240sx's, go to some sites like nico and zilvia. This picture is off page 2 of the wheel whore fitment thread.