Triumph Tires

I was doing some testing on the taillights on my '65 Rambler, to get to the passanger side connections, I had to remove the spare tire... I was supprised when I lifted the cover because the spare is brand new with the color stripes still on it. anyway. it's a Triumph brand tire, the logo on the side looks just like the logo for Triumph cars and motorcycles.. the date code says it was made in 1980.. anybody know when exactly Triumph started and stopped making tires? I'v never heard of them b4..