If I have the stock 15 inch aluminum wheels on my 2000 s40 what is a safe size tire to put on there? I would like to have the tires be a little wider and aggressive looking but I dont want to mess up the car. Any suggestions?

So your going to stay with stock rims at 15"?

I went to Discount Tire Direct, and looked at the 15" wheels they have available. I clicked on the OEM Steel wheels.

This is what they said are "Tire Options".

195/60-15
185/65-15
195/65-15
205/60-15