Yeah this is my thought exactly.grannyknot wrote: ↑Sat Aug 13, 2022 1:44 pm Gotta agree, dust and dirt on a car that needs a wash consists of many different kinds of contamination and sharp gritty sand particles are one of them. That is the whole point of the pre-rinse, to try and lubricate those particles and knock them off before any brushes or clothes get near the surface.
Just can't believe that spraying some product on and wiping it off with a cloth isn't going to leave some scratching, lots of products make big promises but deliver something else.
Do I have a solution to the problem, not at all, but I would stick with "do no harm" as the first step.
You could just let the car be dirty until the water restrictions are lifted.
I was out today and saw a few people washing their cars probably trying to get in before the imminent hosepipe bans. Unfortunately in just over a week I am taking the Z4 on a roadtrip round Italy and so I'd like it pretty clean and preferably slightly sealed with a wax or ceramic spray before going. I'll probably end up getting a local detailer to come and do it as I've used him before and he does a good job.