What's with Radial TA's?

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I liked the first-generation T/As, I bought a set in 1979, they had the small block letters very similar to the Polyglas Gts, they rode better and were nice and fat.

Later on, they switched the font on the tires to a 'slanted' font, and the letters were larger. I never liked those tires as much as the earlier versions. I would buy another set of te early ones if I could find some in nice shape. Old pic, color is washed out, car was a Hemi Orange 440-6 4-speed.