Anyone? Off the top of your head?
 

I have the 2004 EX Accord Sedan. Looking to go from the 16" x 6.5" to something around 17" x 8" or 18" x 8" for the summer months. Being a Sedan and wanting to make it zippy and with the perfect world goal of SCCA Autocrossing I want to drop, widen, and stiffen the suspension. I plan on spacing out the wheels by about an inch, adding a big brake kit when finances allow, and putting the wider/larger diameter wheels on the car. The lowering is not based on a height that I want, it will be based on what is intelligent once the suspension is tight and right.

I have VERY little knowledge of offset calculation (which I will be looking in to the via the sticky at the beginning of this board) and am wondering if anyone has already made this wheel change on their accord and happens to know the offset required to keep it from rubbing at any point in a turn.

So, 1.5" wider on the tire, 2" larger wheel diameter, 1" Spacer to the hub, what offset am I looking for.....this is the question.