I have a 2009 35i with NON M bumper. which I like.
I am adding these CF splitters to my ride. I have also have CF gloss black wrap the lower grill inserts and will be painting the black plastic sections separating the lower middle grill from the lower outer grills my Space Gray Metallic body color in order to give it a M bumper look.
2009 BMW Z4 35i/Space Gray Metallic/7 Speed DCT/Premium,Cold Weather & Premium Sound Packages/Nav/Comfort Access/Ash Grain Interior & Dash Kit/AntiTheft/SportWheel/PDC/WindDeflector/Black Kansas Leather/Smoked Reflectors, Side Markers & 3rd Brake Light/Ferrari Red Brake Calipers/Clear Front Mask/Gloss Black Grill Inserts/6000K LED Lighting/De-Badged/Aluminum Pedal Set/Real Carbon Fiber BMW Door Sills/CF Wrapped Engine Compartment Roundels,F Lower Grills & Center Wheel Caps.