bad times with the tire mate.
same thing happened to me like last summer, it totally ruined one of tires.
it happened on the m25 after a drive of 150 miles. i think mine got punctured when i went through one of the service station exits on the M1 (the one where u have to go through a tunnel , it was flooded so i drove through it slowly but got a puncture from something in the water)
at least yours tells when there is a puncture, i have got a e46 coupe.
the tire looked similar to the one above.
realised now why you after a 255/30/19 tire lol
sorry about the essay