Originally Posted by rollingroo
We did hit a large pot hole the week before but it didn't appear to do any damage. We thought of checking the weight. But not sure where to do this? Looking at the tires they never really looked like brand new tires .
NOTE. I may have forum post and tire condition confused. I received pictures in email but no sender name. Also incorrect claim of "blowout" which is an ongoing problem. This is like telling police the man is dead but there is a difference between being shot and having a heart attack.
Terminology and accuracy does make a difference if you are trying to solve a puzzle. Many times all I get is a puzzle box, with many pieces missing and sometimes the description of the puzzle scene "a tall object" doesn't reflect if the puzzle is about a tall tree or tall mountain. There is a picture in one thread I am monitoring with a tire with large baseball size sidewall blister. So maybe not this post but the suspected cause is still impact and this is based on evidence observed in the attached picture
Where to weigh See links in my previous post.
Thanks for the picture. I attached a copy.
Failure. Now we get the rest of the story. When you hit a pothole the body cords are subject to "shock" loading and just as you can snap a 10# fishing line with a 5# fish you can also break the body cord. Higher speed can definitely increase the potential for a shock impact break. Sometimes this does not immediately break through the outer sidewall
It may bend the rim, or may just leave a mark as seen in your picture. In a perfect storm the broken body cord may allow internal air to seep into the tire structure and "inflate" the sidewall with a blister similar to this.
I have also attached a shot "Case #2" from one of my seminars on tire failures with examples of observed conditions.
None of the above are "Blowouts". They aren't even a tire defect. Impact breaks are the result of a combination of variables of Load, Inflation, Speed and the size, depth and even shape of the pothole or trash on the road.
I would consider yourself lucky and get a new tire. Maybe slow down a bit too.