Im new to this site and this is my first thread, I've had these wheels on for a little while now, but since i lowered the car, the rear tyres were rubbing on the arch. so i had to adjust the height again to stop the rubbing. currently the wheels are 15x8 +25 offset and they fit alright until you want to lower the car.

Wheels: 15x8 +25 Offset
Tyres: 195/50/R15

I have seen some people on Instagram running 16" wheels on their ST150, but i'm not entirely sure if that would work on the "Zetec Climate" Model that i have or just the ST?

What do you think would be the best thing to do? I would like to lower the car more than i can currently.
- Get lower profile tyres (If so, what size?)
- Get 15x7.5 wheels and new tyres (If so, what size tyres?)
- Get 16x7.5 wheels and new tyres (If so, what size tyres?)