We need a little more info on what type of Civic you have. That will tell us what the original tire size is and what load index is the minimum you should use.
But another way to do this is to look at the vehicle placard. It is usually located on the doorpost or in the glove box.
But my gut feel is that a P205/4-R17 is too small and you need a P205/50R17 88 LI or a P215/45R17 87 LI
Hope this helps