i just got my black fr500s today im doing 18x9 up front and 18x10 in the back. i went over and ordered nitto 555s 265/35-18 for the front and nitto 555rs 305/35-18 for the back. the guy said the 555rs will only last me about 5000 miles but i got them anyway. what was your experience with the 555rs? how many miles?