This is probably a stupid question, but are the 2011 stock wheels the same sizes as the previous ISF's ('08-'10) wheels? Also, would your experience with the Conti's in the 285 width tires in the rear vs. the stock tire 255 width (ie. improved performance) be directly applicable to the PSS's... or since they are different tires (but come in the same size) would they fit and or possibly have worse performance than the smaller 275 tire recommended by the direct tire rep? As always.. .TIA!!

(I'm seriously considering getting of rid of my Potenzas that only have 3500 miles on them for the PSS's and if I'm understanding all the posts right, it seems that wider is generally better for performance (to a point obviously). LOL (you also say there is "no downside", but is there any theoretical or possibly observable downside to going with the 285 and 255 combo compared to the stock sizes??? I'm sorry for my newbie questions.....