My PD130 came with R32 alloys fitted. It needs new front tyres so I'm going to do all four, but would like to go up to 225/40/18 (currently 215/40/18). Also want to lower it by 25-30mm because it looks stupid at the moment with the 18" wheels. If I do both, will I scrub the tyres when turning? Should I stick to the 215s?