A1EK

I am looking at lowering my Audi A4 B6 1.8t 2005 year and I am considering adjustable coil overs or alike.
I'm not needing to 'slam-it' just a nice drop to bring the wheel arch down to the wheels which are 255 x 35 x 18 rears and 235 x 40 x 18 up front.

I drop like the attached is what I am after.

Any advise on what type / make / costs would be greatly appreciated as I know this is a big subject.

Thanks