Tire rating and blowouts
I don't have any hard evidence to support that contention but logic tells me that a stronger tire (Z-rated) will hold up better than a tire rated for lower speeds.
I suppose manufacturer quality standards are a factor (think Firestone Wilderness and ATX tires) as is usage. Consistant high speeds on a 112 mph-rated tire would probably stress it more than it would on a 150 mph-rated tire, thus leading to possible frequent blowouts.
I've always had V or Z-rated tires on my Mustang and have never had a blowout and only one flat in 12 years.
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