Quote:
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Originally Posted by RandallNeighbour
Hey Jim, what is it exactly that causes a really good plug and patch job to come loose at speed, causing a blowout?
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Randall,
The issue is Heat. You increase the Mass (and consequently the Heat storing capacity) in the area surrounding the Puncture allowing Heat to Build-up - you create a
Hot Spot.
The main difference between a High Performance Tire and a regular one lies in it's ability to shed this Heat, not in Grip, Water Channeling, or Agressive Tread Patterns. Tires under the stresses of Performance Driving can reach temperatures exceeding 300°F for short intervals. These Temps can soften and reduce the adhesion abilities of the Glue used to secure the Plug and Patch, and they may just come loose.
With this newly created
Hot Spot, you compromise the Tire's ability to work as it should and a Heat induced Blowout (at high speed) is more probable.
Not only this, but the Puncture may have also severed some of the Belt Cords, these run diagonally from sidewall-to-sidewall and work in unison. If these cords are severed, they cannot do this and so the strength of the Tire, along a diagonal axis in the affected area, is lessened as well. Hope this helps...
Happy Motoring!... Jim'99
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