Reddit says to use baby wipes to wipe off (you may need to apply some pressure). The grain is always going to be there, but it just becomes visible due to dirt and looks like stretch marks.
See the reddit thread I linked. You just need to clean the seats (people had success with baby wipes with enough pressure, but tesla recommends just warm water and mild soap with a microfiber cloth). The grain is going to remain, but it is only showing up because the seats have gotten dirtier since they were new.
After performing this cleaning the "stretch marks" are gone and the seat looks like it did before? I read a few times "you can still see the grain" after cleaning but I don't know what that means I can't see any grain in the seat?
Note I didn't say "you can still see the grain" rather that it is part of the seat and will "remain" (just that you can't see it from afar when seats are clean). Any leather and faux leather has grain, especially over the more complex shapes it is stretched over. If you take a 3D scanner or magnifier or apply some visualizing powder (which when seats get dirty, acts like the same thing) you can see the patterns in the seat. I'm pretty sure even brand new seats would have this pattern.
You didn't state you can see the grain, that was mentioned in some other posts earlier. As far as the pebbled look yes I see that, I guess that was what they meant by grain. I'll try the mild soap and see what happens, thanks.
You're absolutely correct and thanks for the detailed response. The OP has had this problem with only 3 mos of ownership. By contrast my Model Y with black seats after 1 yr, has no stretch marks at all, ZERO.
