Correcting Speedo after Wheel change.

This chart is applicable to early a-bodies.

Tire Size Tire Diameter 2.93 3.23 3.55 (1) 3.91(2) 4.56 (3)
6.50 x 13 23 19 21 19 21 --
7.00 x 13 24.3 19 21 18 -- --
7.00 x 14 25.4 18 20 18 -- --
7.50 x 14 25.9 18 19 21 19 21
8:00 x 14 26.4 17 19 21 18
8:50 x 14 26.6 17 19 -- -- --
9:00 x 14 26.8 17 19 -- 18 --
6.70 X 15 26.3 17 19 21 -- --
7.10 x 15 27.4 17 19 -- -- --
7.60 x 15 28.3 17 18 -- -- --

(1) use .800to 1 ratio adapter
(2) use .800 to 1 ratio adapter
(3)use .800 ratio adapter

Oops...lost formatting in post. guess you'll have to count rows.