Goodyear Marathon - question about uneven sidewalls

[D44]

On our trip home this weekend I checked the GYMs on the Airstream at a rest stop. Running my hand along the sidewall, I felt "dimples" on the sides of at least 2 of the tires.

The picture below shows one of the indentations on one of the tires.

I am already paranoid about GYMs as it is, and am not sure what I am seeing on this tire. Any idea? Is this anything to worry about?

This is a 2017 FC25 FB we picked up at the very end of September, 2016. 4450 miles on the tires.

Thanks

[dznf0g]

Normal. That's where the sidewall and belt material overlapping seam is. Many tires display this phenomenon.

[Action]

+1 to the above.

It is normal based on how the tire was constructed. I am sure some will post about that process. And the indentation in the side wall is not limited to the brand or type of tire you have. It is seen on many tires.

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