My car came with PS2 tires and I just recently changed the rear tires to new PS2. Seem that PSS is better than PS2 and I am thinking to change the fronts to PSS when they wore out. Is it OK to have PSS fronts and PS2 back? Obviously I want to eventually change the back tires to PSS too.
2009 M3 E93 DCT SG/FR Extended
Winter beater: 2009 M3 E93 DCT with Dunlop SP Winter Sport 3D