If you have 15's are they're almost tucked, then I would go with 17's. Though 19's would fit the car, you're gonna have to raise the car a bit to avoid issues with rubbing.

Rolling with 19's (especially as a daily driver) would be very uncomfortable and inconvenient. Every little imperfection on the road, you will feel (because of the very little rubber between the wheel and the road) and you have to watch where you're going if you plan on keeping the wheels intact.