The sport and the IPL rims are identical widths, correct? I have 20mm on the rears and they poke out a hair beyond the fender. jk315's rims look flush with the 25mm rear spacer. Weirdness...

Different camera angles, I'll shoot a similar angle today.

 

Looks great! That does not look like 25 mm in the rear.. I am on stock height so maybe it makes a difference but mine in the rear looks the same as yours w/ 15mm..but it must be because your lowered.....

 

Yep same width... Could just be camera angle... Or even camber angle. I have 15 mm and those look flush on my car.