Yeah, I had thought of that, however the other day I swapped over my stock rims with my brothers 16" buddy clubs/ tyres, and the rolling diameter was virtually identical.. There was no raise in the car's height what so ever..There was just more rim and less tyre.

So I was of the impression that an extra inch in rim size might lift the car slightly, however it may also fill the guards out more?? (I could be way off the mark though?).. Just looking for peoples thoughts?.