Seems like they would fit to me, my friends got them on his GS-R

I dont know it he modified anything, but the fit. I never looked to see how close the calipers are to the rims.

Dont the EX's have 15's

IMO, i think the HX wheels are very ugly. I guess if your going for lightness it dont matter. My friends are painted black, then again his car isa piece of sh!t. Maybe thats why they look like sh!t