I have a 58 fly cloud and it has 14.5 rims on it. I picked up yesterday a set of 15 in safari rims at a garage sale. I want to go to 15 in. What tire should I put on it. Another question is, what color are the original rims for a 58. I sanded and found three different colors. white, red and black? I have seen some oldier with red rims and thought they were different.