Ok i have searched everywhere for this... ive got that the same size rt-615's grip a hair better than the same size rs2 z212's. However im running sts2 and the max width is 225. I cant find the falken in that width which would put me running 205/50/15 for the rt 615's. Then 205 falkens would weigh in at 21.2 lbs and have the 225/45 kooks weighing in at 19.7. So would the 225 kooks that are wider than the falkens and lighter be a better choice? Would the falkens still handle better? Im leaning toward the kooks, thanks.