I have a set of OZ wheels in 15x7 for the 4KQ. The outer diam and width is about the same with 205-50-15 tahrs as are the stock 4KQ 14x6 wheels with 205-55-14 tahrs that I have been running. There are absolutely no problems with the 205-55-14s, so I expect the 205-50-15s will be just fine. -glen