that form of tire failure doesn't look as if it could be anything but a failed tire.

there are no marks suggesting a rub before the blowout.

the other mark, i agree, looks to be from the flat tire rubbing.

i would think of a different brand of tire, i think.

of course the mfgr may replace the one damaged tire for you in the mean time. but if it were me, i think i would be wanting something else.

maybe a michelin.

tom w

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.