footprint

I see the rear tyre width is 245 for both 17 and 18 inch wheels wheras I would have expected the 18's to have a larger footprint. I know the profile goes down from 40 to 35 but is there any gain in handling with the 18'S and how much sacrifice in ride quality, if any, do they give. I see the...

Since you've pursuaded me to buy an eco friendly ML (V8) :rock: I thought I'd check out my carbon footprint. It seems despite the un-Livingstone choice of motor, I can also be smug at my below average emissions....so to all those green hippies...roll that one up and stic:eek...