I have 205/50/17 zr N3 on front and 255/40/17 zr N3 on back. You really wanna try and get these not only does it make the boxster look huge! but they feel awsome to drive on.
Remember also its all about balance and these sizes balance the boxster just fine. I have been the highest speed of about 143 mph and it was like sitting at 60 mph. I havent been any faster than 143 as that was fast enough
o yes and no spacers needed.. direct swaps