Wooden spoke wheels were pretty much the same but let’s use this one from a 1927 Talbot Star Coupe for a guide.
I brought the photo into Sketchup and based on the wheel dia that I found on line I gathered some basic dimensions.
Fairly Important: I found an online antique tire business. There was a chart showing dimensions of tires from various years – including 1927. It had the dia, width, tread width, profile. Using that, clues from photographs and the size tires used for the 1927 Talbot I came up with these dimensions. These ARE NOT necessairly correct .. but within the bounds of being close. That’s good enough for me since I just want a generic wood wheen that approximates the correct size and dimensions.