Well with 15" wheels, I've had 6.5j and 7j. Both take 195's, but only the 7j's take 205's. I'm not saying they won't fit, merely that it's worth checking 1st. I wouldn't put 215's on my 16's for instance.If the 215 45 is your standard tyre on the alloy the 225/45s will fit.
Its only 10mm wider.
I got my tyres cheaper with the 195/50 size.
Thread hijack but could I safely put 195/45/15 on my Dynamique alloys, they are 185/55/15 atm.