I'm thinking of fitting 15 inch alloys to my 2013 Jazz in place of the 16 inch ones and wonder if the wheels from the Civic will fit the Jazz ok?
Why 15's?
They'll look lost in the Arches in my opinion.
The 15" wheels with higher profile tyre give a much better ride and an infinitely greater choice of tyres at much lower prices. When I take winter tyres off my wifes Jazz in March and refit 16" wheels I am always struck by how much harsher the ride is, and noisier - she would happily leave 175/65R15 on all year round. The handling does not feel quite a sharp with higher profile, but the Jazz is no sports car and unless you want to drive like a loony it will not be so noticeable.
This could well be the year I get 15" alloys for her car and enjoy the benefit of much cheaper tyres, a lot more choice of tyres and better ride (her 16" alloys may well need a refurb anyway and that costs around £50 a wheel about the same as brand new 15" alloys from mytyres - so will actually be cheaper rather than spending more money buying rare and expensive 185/55 tyres again).
The outside diameter is same as 185/55R16 but there is more tyre and less wheel, so space taken up in wheel arch is exactly the same, maybe black / dark grey alloys would look better as difference in colour between tyre and wheel would not be so different.