Looking for tires for my DoodleBug 29AA. Tires are Firestone-dimensions 6 X 32. Outside rim says 21 1/2 ". Want used tires if possible to keep original look. I don't think these will hold tubes.
Dale, the rule of thumb when converting old sizes to new is to take twice tyre height form the outside measurement to get the rim size. In your case, twice 6 is 12, taken from 32, gives a rim size of 20" I don't know where your 21 1/2' fits in with this.
You may be looking for 6.00 x 20" tyres, but these are quite wide for a car.
This may help.
Allan from down under.