From a previous life as a fatal accident investigator, it’s my experience that blowouts are thankfully very rare, and often can be avoided with regular routine maintenance. Genuine tyre failure (without external influences such as tyre pressure) are similarly rare.
In this case it looks to me like old damage which has given way.
The most frequent cause of a ‘blowout’ is inappropriate tyre pressures. The pressure may just be too low, or it may be the vehicles usual pressure but now with a really heavy load.
Either way the effect is the same.
Imaging viewing a section through the Wheel/tyre from the rear.
An under inflated tyre’s sidewalls bulges and bows out significantly at the bottom of the tyre, whilst the rest (90%) of the tyre’s side walls are relaxed.
As the wheel rotates and as each portion of the wheel’s circumference becomes the contact patch, the sidewalls go from relaxed to bowed And they do this thousands of times a minute.
It’s this flexing from being bowed to being relaxed that causes heat and the decomposition/ delamination of the tyre structure and.... bang, all of a sudden it let’s go.
Simple maintenance
Keep an eye on damage to your sidewalls
Regularly check tyre pressures
When you stop, like a motorway services, put the flat of your hand on each tyre’s sidewall. If the odd 1or 2 of them are running significantly hot, there’s likely a critical problem
Vehicles with non standard wheels may not come with recommended tyre pressures so you’ll need to be particularly sensitive to managing your pressures
HTHs
In this case it looks to me like old damage which has given way.
The most frequent cause of a ‘blowout’ is inappropriate tyre pressures. The pressure may just be too low, or it may be the vehicles usual pressure but now with a really heavy load.
Either way the effect is the same.
Imaging viewing a section through the Wheel/tyre from the rear.
An under inflated tyre’s sidewalls bulges and bows out significantly at the bottom of the tyre, whilst the rest (90%) of the tyre’s side walls are relaxed.
As the wheel rotates and as each portion of the wheel’s circumference becomes the contact patch, the sidewalls go from relaxed to bowed And they do this thousands of times a minute.
It’s this flexing from being bowed to being relaxed that causes heat and the decomposition/ delamination of the tyre structure and.... bang, all of a sudden it let’s go.
Simple maintenance
Keep an eye on damage to your sidewalls
Regularly check tyre pressures
When you stop, like a motorway services, put the flat of your hand on each tyre’s sidewall. If the odd 1or 2 of them are running significantly hot, there’s likely a critical problem
Vehicles with non standard wheels may not come with recommended tyre pressures so you’ll need to be particularly sensitive to managing your pressures
HTHs
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