- Joined
- Jun 19, 2023
- Messages
- 772
- Reaction score
- 831
- Location
- Denver - Vail, Colorado
- Cars
- 2023 AT Cosmos-Tahoe 21"
@Drendino -- I hate to mention it but the road upon which your tire just deflated, MOST LIKELY had NOTHING to do with damage that caused the total blowout.Does this look like a bad road to you? I find it amazing that there are still a few who will defend these crap tires in face of all of the evidence. Still waiting for a tow by the way. Last estimate was 90 minutes before the driver cancelled. If I seem grumpy, I am.
Edit to say that cell service is weak and I can’t upload a photo of the beautiful road it blew out on.
Only in the harshest whacks does the tire sidewall immediately rupture. From what we have seen on this forum and in my personal experience, a pothole or curb or brick will first cause the infamous BUBBLE on the sidewall, indicating interior damage to the sidewall plies. LOTS of bubble pictures on this forum
Just like a zit, the bubble grows and grows and eventually pops, sometimes days or even weeks later, after the bubble first appears. I am guessing the bubble shows the first indication of the sidewall damage, which is a delamination of the horizontal plies in the sidewall. Once delaminated, the sidewall continues to flex the the torn/separated plies just get looser. And then, when you least expect it, give way.
I took the car into DT for the tire certificates at 7AM. At 7:15am a flatbed brought in a week old AT with a ruptured LF tire, Pirelli 21" of course, and damaged wheel. Driver ran straight over a curb, at speed, I was told. That will do it instantly. On the other hand, years ago, wife tapped a curb very hard parking on a 21" 35 ratio Conti. Bubble formed. Moved the tire to the rear. Conti lasted weeks on the rear, until we replaced it. When a bubble forms, Conti tells me, it will let go SOMETIME. Maybe not today or tomorrow, but sometime
No low aspect tire can survive a smashing pothole at speed. What bothers MANY HERE, INCLUDING ME, is that the 21" Pirellis seem to get bubbles JUST BY LOOKING AT THEM CROSSWISE.