I have been a Z4 owner for one month now. I washed my roadster first time last week, and the steps as follows:
(1) Clean alloy wheels with BMW Wheel Rim Cleaner and rinse;
(2) Spray BMW Convertible Hood Cleaner on the roof and clean it with damp sponge, and rinse;
(3) Wet the whole car with hose, and use BMW Car Shampoo to wash bonnet, windscreen, windows, rear screem, boot lid, and rinse;
(4) Wash upper part of front bumper, front wings, doors, rear wings and rear bumper and rinse;
(5) Wash lower part of front bumper, front wings, side skirts, rear wings and rear bumper and rinse the whole car from the top to the bottom;
(6) Dry the car with chamois leather;
(7) Apply BMW Impregnating Agent to the roof (not everytime).
Do you guys use soft-top cleaner for every car wash? Or just use car shampoo? Or do you wash the roof everytime when you wash the car? Please let me know if you wash your Z4 differently. Thanks.
(1) Clean alloy wheels with BMW Wheel Rim Cleaner and rinse;
(2) Spray BMW Convertible Hood Cleaner on the roof and clean it with damp sponge, and rinse;
(3) Wet the whole car with hose, and use BMW Car Shampoo to wash bonnet, windscreen, windows, rear screem, boot lid, and rinse;
(4) Wash upper part of front bumper, front wings, doors, rear wings and rear bumper and rinse;
(5) Wash lower part of front bumper, front wings, side skirts, rear wings and rear bumper and rinse the whole car from the top to the bottom;
(6) Dry the car with chamois leather;
(7) Apply BMW Impregnating Agent to the roof (not everytime).
Do you guys use soft-top cleaner for every car wash? Or just use car shampoo? Or do you wash the roof everytime when you wash the car? Please let me know if you wash your Z4 differently. Thanks.

