I bought my 2015 4S in November 2014. In December I switched over to my winter wheels and tires. I only went back to the SportTechno summer set just last month. So that's two months or about 200 miles on this summer SportTechno and Perelli PZero set. Just last week I picked up a new set of wheels from Porsche that consequently came with a new set tires for summer. So, I'm letting the SportTechno / Perelli PZero set go. These retail brand new (mine are basically brand new), for $8,275. I'm willing to let mine go for $3500. that is still cheaper than any real entire site you can get directly from Porsche. SportTechno 20 inch rims Staggered Pirelli PZero's (full life left on tires) Comes with full color Porsche center caps and of course, TPMS sensors. $3500 +shipping (unless you can pick up locally) Thanks