The VW wheels have a 57.1 mm centre bore, the civic has 56.1 mm, as far as I know there are no hubcentric rings for that small of a change, that's only 0.5 mm on each side. Some people say that it won't be an issue at all, and a surprising amount of people use a little bit of tape on the hub, and it squishes down to size... Not sure exactly what I will do.
I am extremely confident in the rust proofer that I use. We have used it on our tractors during the winter plowing snow and salting, so you can imagine how badly they rust. Since using this undercoating no rust has formed at all, spots that already had rust don't even get worse.
So on the civic I have a lot of faith in using this waxy coating as an undercoating, and then maybe even an oil spray inside the rockers for good measure.
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