Nylon tires thumped.  Don't know about rayon.  Some newer tires have rayon, however.  I don't know why.  My brother tells me that radial cords smoothed out the thumping even more than the move from nylon, but I do know that nylon thumped.  DMc

---- Karl Wolz <wolzphoto@q.com> wrote:
> My recollection is that nylon cords were introduced to get RID of the
> thumping; it was rayon cords that had
> "memory issues".  OTOH, I could be wrong - it's been many years ago.
>
> Karl Wolz
> |
> |From the link you provided, I see that the tire includes nylon cords.  I
> |did not know that any modern tire included nylon in the construction.
> |Perhaps because Hankook markets them as a "summer tire," they find nylon to
> |be satisfactory.  Have you noticed the thumping phenomenon I mentioned?  Do
> |you guys drive them year-round?  I would assume so.
> |
>

--
David McNeely