The 15" wheel option used 7.00 x 15" tires. These tires were the same height as the standard 6.00 x 16" tires so the speedometer gear and axle ratios would work out the same. The 7.00 x 15" tires are wider and therefore provide more flotation than the 6.00 x 16"s.
My 1949 CJ-3A was purchased new with 15 inch wheels. �They are shown as Part Number 642053 on page 94 of the Parts List manual for Jeep Models CJ-2A and CJ-3A Copyright 1949. �Bob W's book, THE CIVILIAN JEEP MODEL CJ3A also shows pics of both the standard 600 x 16 and the optional 700 x 15 wheels on page 26. �They are indeed an option.
I believe originals are fairly rare. I have 15s on mine, but they are not CJ wheels. I think they were from a Jeepster. Dated 1955 and they have the hub cap lips.
Hi guys, I thought I read somewhere that 3As could have optional 15" wheels. Reason why I'm asking is my '53 has 15" KH wheels and when I sandblasted them, I could see the original campus red color (everything else was that color) and pin strips. I believe they are originals. Are they indeed an option?