They fit my 1987 Cadillac Brougham perfectly. My car has only done 33,000 miles and still had the original tires on it. I used the car on set and drove to and from the set a few times with these tires on. Creepy I know. These adapters were cheaper than buying new tires or other wheel tires that may not have gotten to me in time. I had a set of 5x4.5 wheels from Auto Parts with good tires. I put them on and sent them! Worked great! I've driven it about 1000 km and no problems so far.