I have a flared cmc with 225 50 16 wheels 7 inches wide. The wheels were from a porsche 928, disc type and chrome. The offset on the wheel was such that it would move the wheel inboard. I had to have wheel adapters made from the 4 bolt hub on my car to the 5 bolt 130mm pattern of the porsche. The width of the spacer had to be two inches to fit everything in the fender. Came out perfect with little room to spare. The 225's do well on the front also. I have a friend with a machine shop who gave me his shop's use for free. Paid another machinist 10 dollars an hour for labor and I also helped. The spacers were a pain and the cost was 300 dollars with a sweetheart deal. Much work involved. The looks were so improved it was worth the time and money to me, and the Car handles well with the yokahama Z rated tires.