NTKK (Panaracer) "Snakebelly" Old School BMX Tire
Remade from the original NTKK mold which is over 30 years old. This tire never went out of production but was used only for black wall tires. NTKK made special "Snakebelly" tires for Cycle Pro and Mongoose. Redline used this model on some of their bikes.
Note that unlike the 20 x 1.75 tire the text (e.g "Made In Japan") is pressed into the tread color