If the 15" wheels don't fit it will be due to brake clearance. I've never tried it.
A quick web view at tirerack confirms they are not recommending a 15" wheel size option - I'm guessing that -1 is 16" wheels since many of these cars were sold with 17" wheels.
If it were me: call tirerack and see if they have a definitive answer. Or, visit a tire shop were you will buy some winter tire solution and ask them to put your car on a lift and experiment with a 15" wheel for a definitive answer.
There are no 15" wheel options listed in the Owner's Manual. I would figure that means 15" wheels won't fit, period. (9-5s with regular brakes are allowed 15" wheels, even though you would never see one outfitted like that, at least not in North America.)
I need some help to determine what is going on with these rims. The rims are Voxx and came with summer tires mounted along with a OG 9-3, I recently purchased.
The problem: In the picture two lug nuts are seen. The left is 9-3 NG lug nut and one on right lug nuts are 12X1.5 on the OG...