As I draw ever closer to affording a set of Falken Azenis 615 tires, I need to decide what tire size. These are going on my GS rims (stock size of 215/55/16). I'm thinking of getting 215/45/16 as it would very slightly reduce my final drive ratio but the tires are also available in 225/50/16. I don't think sidewall roll would be much of an issue so the question is which is more beneficial, a centimeter off the tire's radius or an extra centimeter of traction.
Links for reference:
http://cgi.ebay.com/ebaymotors/1-NEW...205|240%3A1318
http://cgi.ebay.com/ebaymotors/1-NEW...Q5fAccessories