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redmodelt · 05-04-2015, 07:26 PM

By the fall of 1925 you could get 21 X 4.5 tires on a Model T and that is how there listed on the tire. The outer diameter of most 21 inch tires of the day were 30 inches so they could be listed ether way.

05-04-2015, 07:26 PM	#1
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,408	Re: Early 1928 Instruction Book mistake By the fall of 1925 you could get 21 X 4.5 tires on a Model T and that is how there listed on the tire. The outer diameter of most 21 inch tires of the day were 30 inches so they could be listed ether way.