David, is it necessary to has ZAIO as a base coat before Z5 or Z2? I hate anything that has residue in it, so I just wash my car with Z7 and spray some turtle wet wax on top of the wet car and wipe it dry, then Z5, Z2 and Z6 (every 3 months) and only Z7, turtle wet wax and Z6 on regular wash (every 2 weeks). I also use turtle wet wax on the wheels after each wash and wipe it dry and realize that the wheels are more shinny, smooth and last longer (without brake dust), or should I try Z6 on the wheels as well (Zaino stated that Z6 is the antistatic formula that will reduce dust and dirt pickup by 60%)? Let me know your opinion. Thanks.
2006 BMW 330i - Delivered 9/16/06
Black Sapphire | Terra + Poplar | Sport | Premium | PDC
Blacklines | 189 Wheels | CF Front Lips | Euro Headlights | Rear Fog Lights