This PIRELLI 205/70VR14 CINTURATO ™ CN36 was developed in 1968. A Dino generally speaking fits a tyre of the size 205/70VR14. The very first few Ferrari 206 Dino cars fitted a smaller tyre of the size 185R14, but they soon moved on to 205/70VR14 in 1969. The 246 Ferrari Dino, the 308 GT/4 & the first of the 308 GTB and GTS cars fitted 205/70VR14 tyres. At the same time Fiat were making there Dino cars and again the first few Dino 2000 cars fitted 185R14 tyres, but when Fiat moved onto the 2400 Dino they moved on to fitting the 205/70VR14 PIRELLI CINTURATO ™ CN36 tyre that we have available today.
In period a V speed rating was the highest you could attain. The current PIRELLI 205/70VR14 CINTURATO ™ CN36 does actually qualify for the higher 170 mph W speed rating, however when looking at fitment guides, or probably the tyres on your car you will probably find they are called 205/70VR14.