If you look in the Parts Maunal on P 269 (in my copy), it specifies that certain size wheels were used, either 16 or 15 based
on serial number of the car, but does not list the specific year timing.
It was my understanding that tire size changed sometime
during the 1947 model year from 16 to 15. My 47 came with what seem to be stock 16 inch wheels, so it must have been
an earlier model. I haven't researched it as I run 1955 Chrysler wire wheels which are 15s and don't care which size was
original. However, I have saved those original rims--just in case.
My speedo is approximately 15 mph fast.......If it says i"m
going 50 -- I'm really only going 35. Have used the GPS to check speed on occasion....and also the cell phone with
"now how fast am I going, Honey??"
So, I have just learned to live with the thing.
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