Did you use the OE tires? What are the widths of your new wheels? You probably stretched them to much, causing the 4x4 look.
Edit: nevermind, i searched for your other thread. I think your tires are creating an optical illusion...
E92 M3 DCT - AiM EVO4 Data Logger / AiM SmartyCam HD / KW Competition 2-Way / OMP ARS Racing Seats / Brembo GT 365 / Pagid Yellow RS-29 / Rear Seats Delete