I did try another way.

I extrude my thread pieces, move them where are my 2 curves for my tire, create the revolve for the tire then use it to boolean-diff and then ajusted the pieces (that got the curve of the tire correctly). The move made the bottom part of the thread not to show inside the tire. But one thing i think to really make the thread would be model a degree of the tire then to the array.

Anyway doing some test render in Carrara and will show them later on.

To Michael -> Thank you, that will become very indy.