Wheel Modification Question

[dupid]

I have just purchased a 1997 ES300 with 15" wheels and am dissatisfied with the appearance. Any suggestions for me? I do not really want to go so large that there's discomfort in the ride but I ask club members 16" or 17"? In addition, I have a dilema. this is that my tires are shot and the change must be made quickly. The car currently has 73K on it and feels like it needs front end attention, this to be checked tommorow morning. I am older and do not wish extremes, but the current wheels really date the body style, I have read a couple of posts regarding change to 2002 or so IS300 wheels. Any replys would be appreciated.