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Message no. 1
From: Paul Gettle RunnerPaul@*****.com
Subject: Cops and Tires [was: Heavy Armor...]
Date: Sat, 06 Mar 1999 23:25:00 -0500
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At 12:44 PM 3/6/99 -0800, Jason 'Ding' Dowd wrote:
>I think something they're really thinking about putting into the
field is a
>device that they put in the road in front of the speeding car. When
the car
>hits it, it sticks all these little tubes into the tires and causes
the air
>to bleed out slowly, so the driver doesn't lose control, but he can
only go
>another half mile or so before he loses all the air and has to stop.

Cops have already been using spike strips like this for the past few
years now.
I just wonder how all the new RunFlat[tm] and Zero Pressure[tm]
radials perform when they hit these police countermeasures. If you
believe the tire manufacturers' claims, I don't think that a spike
strip would have much effect on them (The one tire manufacturer claims
that the tire can have a golfball size puncture and still keep
going...)

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--
-- Paul Gettle, #970 of 1000 (RunnerPaul@*****.com)
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Message no. 2
From: Stainless Steel Rat ratinox@******.gweep.net
Subject: Cops and Tires [was: Heavy Armor...]
Date: 08 Mar 1999 00:15:40 -0500
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* Paul Gettle <RunnerPaul@*****.com> Sat, 06 Mar 1999
| I just wonder how all the new RunFlat[tm] and Zero Pressure[tm]
| radials perform when they hit these police countermeasures.

Ultimately, not particularly. Run-flat tyres have solid partitions inside
which hold out the tread of the tyre away from the wheel and flat on the
ground, so the tyre retains traction. Spike strips (the better ones,
especially those used by military units) don't simply puncture the tyre,
they tear gaping holes in them, ripping apart the treads to the point where
there is nothing left for the partitions to hold against the ground.
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--
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Message no. 3
From: Scott Wheelock iscottw@*****.nb.ca
Subject: Cops and Tires [was: Heavy Armor...]
Date: Mon, 08 Mar 1999 06:41:58 -0400
"And now, a Channel 6 editorial reply to Stainless Steel Rat."
] Ultimately, not particularly. Run-flat tyres have solid partitions inside
] which hold out the tread of the tyre away from the wheel and flat on the
] ground, so the tyre retains traction. Spike strips (the better ones,
] especially those used by military units) don't simply puncture the tyre,
] they tear gaping holes in them, ripping apart the treads to the point where
] there is nothing left for the partitions to hold against the ground.

Besides, those walls that hold the tire together can only stand up to so
much driving anyway, usually enough to get you to a service station.
And you have to drive at a reasonable speed. You can't evade cops at a
reasonable speed, so your runflat tires will probably fall apart anyway.

Further Reading

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