I find it very odd that you cannot put 15" wheels on the car since some CR-Zs and other Honda's have 15" wheels. What is the reasoning for that legal restriction in your country(If it actually exists and is not a misunderstanding of information that relates to something completely different about wheels & tires)? It should not matter as long as the speedometer is not off because of it and with the right size tire it will not be.
I know you have strict rules about winter tires and that you have to run them. They can be all season but have to have the special alpine winter icon to indicate certified as a winter use tire on the tire and there is a minimum tread depth but that does not restrict you from running a different size wheel. I did a little searching online here in the US so I might not have all the correct information since I am searching here and in English.
What are the regulations concerning winter tyres in France and Italy? And when must you have snow chains? We’ll guide you through the regulations!
www.eurocampings.co.uk
Do you know that and have it in writing or have you been told that? There is lots of weird things people talk about that are said and are FUD (Fear, Uncertainty and Doubt).
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Fud definition: <a>Fuddy-duddy.</a>.
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Understanding your customers state of mind is only the first step in the process of closing a sale Fear uncertainty and doubt can be increased or decreased using a few simple techniques
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I just do not understand why anyone would argue or try to convince on something like this as long as the wheel and tire combination in that size is not inherently unsafe for some reason.
That being said even in the US we have outdated laws that make no sense at all and need to be changed. (If there is even a law covering wheel size in Italy)