Johnson to a back up, not a tire:

#48-Jimmie Johnson quotes regarding Friday practice accident at Pocono Raceway, Johnson crashed in Turn 1 during Friday’s first practice session.
WHAT HAPPENED OUT THERE?
Well, I just got loose into Turn 1, spun out and tore up the race car. If there’s a time to have it happen, now is the time. There’s a long break before the second practice. We’ll take it from there. Just trying hard and got loose. One of those deals.
IT WAS A HARD HIT. ARE YOU OKAY?
Everybody’s asked. It was a really soft impact from my spot, so I guess everything crushed around me like it needed to. Everything’s fine.
ANY INDICATION OF A TIRE GOING DOWN?
No. I knew when I turned off into the corner that I was loose and as I started cycling through the bumps it just kept coming around. At that point you just kind of drop your head and hold on.(GM Racing PR)(7-22-2005)