I ordered my 2013 edge with just the standard 18" wheels. I really like the look of the 20's and am considering changing. I was wondering if there are any pros or cons other than looks? I assume the 18" would be a softer ride simply because of more rubber but is there any difference in fuel economy, acceleration, etc because of the different axle ratio? I think towing capacity goes down with the 20's or is that only with the 22's?