I'm looking to purchase up to five steel rims for a C-300 or 300B. I believe the rims were the same. Specs are 15" diameter with 4 1/2" bolt pattern diameter. Prior to '55 I believe that Saratogas and Windsors also had a 4 1/2" bolt pattern, which would work. NY's and Imp's I believe were 5 1/2" diameter, ruling them out.
Many thanks.
Chuck, C-300 & a B