I read on here that someone said that all cougars are the same and that you could change the tire rims. I have 16 inch performance on now and cant get snow tires for them ( if you know of any let me know), I would like to change them to the 15 inch rims. I called the mercury dealer they said go for it and I called sears and they said dont ever downsize. Did anyone ever do this? If so, how was the outcome? Thanks for any help.