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Tire Sidewall Markings - Circle & Triangle?

Joined
3 September 2002
Messages
503
Location
West Vancouver, BC
I just got a new set of A022s. The sidewalls have a yellow dot and an orange triangle on them. I believe that I read somewhere that the yellow dot is evidence of the tire being DOT approved and the orange triangle indicates the heaviest point of the tire (for balancing purposes). But when the tires were being mounted the tire tech said the yellow dot is the heavy point. What do these markings mean?
 
Thanks!

Now that makes sense and is what my tech did - at least for one of the tires - he placed the yellow dot beside the valve stem. On the other, the yellow dot was about 10 degrees off.
 
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