I put Pirelli P Zero Nero M+S tires on my non-Sport 2.5 and I've been very plaeased. Decent winter traction and excellent dry and wet grip.

__________________
div 2
1975 2002A
1995 318ti Club Sport
2004 X3 2.5
2009 328i
2007 Mazdaspeed3
1999 Wrangler Sahara
1996 Speed Triple