Peter mentioned this in another thread but I think it deserves it's own for discussion.
"usually it's just a matter of aligning the red or yellow dots as appropriate when the tire is fitted!"
I always thought that it was important to do the Yellow dot in line with the valve stem for good balance. The red dot I don't know what it means. They (tire dealers) are convincing me I'm old fashioned that doesn't make any difference any more. Peter what do you know on the DOT'S?

Didn't know 7 was that big.