scdascda,
If you have an Advance Design truck you could simply split the difference between what you now have (27.5) and what you would like to have (33.2) and you would have a diameter approximately equal to original tires (approximately 29").
It is interesting to note that the original 15" rim and tire (1954) was about 1/2" larger (29.7") than the original 16" rim and tire (29.1" for 16" x 6.5" wide wheels).
I agree with bznhafdzn. Width could be a problem. The sectional width of the tire (unloaded) was between 6.5 and 7.2 inches (6.00 and 6.50 x 16" tires). However, is 2 extra inches in diameter going to cause a problem?
Tim
