Red Dots: Tires

[Eagle-Mike]

I am actually changing my tires. I know, the red dot on the tire shows the light side and this point should be aligned with the valve stem.
Now my tire has two red dots:
a large one close to the rim (I guess this is the light point of the tire)
and a small one around 30 deg apart in the middle of the tire wall (right expression? dont know)
What is the meaning of the second dot? I haven't found any further information on the web on this point


Thanks Mike

 

[Eagle-Mike]

 

[TFF1]

 

[Tomcat]

 

[Eagle-Mike]

 

[rmarshall234]

 

[Eagle-Mike]