I just bought a 1993 240 sedan, and am looking for advice/opinions on the "best" tire size/wheel combination to choose. It has 15 inch steel wheels (from a 740 I think) on it now, and I also have an extra set of 14 inch steel wheels. No matter what happens, it will need tires fairly soon, but not right away. I'm not concerned about snow because in the winter it will wear 14 inch wheels with Gislaved snows.

So, I have a choice between 14 inch and 15 inch wheels, and then tire size. I'm looking for the "best" compromise among all the issues involved, so that the wheel/tire size it gets will do everything (ride quality, handling, etc.) quite well, but nothing extreme. I'm not too concerned about speedo error because that can be adjusted for. Car will be used as a daily driver, mostly around town with some highway driving.

Thanks in advance for your thoughts which I value.