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Registered
Join Date: Mar 2006
Location: Davis, CA
Posts: 81
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spare tire life span
just how old is too old for the inflatable spare in a 911? I have one in a 1976 912E that has never see the ground - would it still be safe if needed? Where is the best place to get a new or newer one if necessary?
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11-06-2006, 08:06 PM
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Make Bruins Great Again
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I just used my spare for the first time. After 20 years it inflated and then deflated perfectly.
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-------------------------------------- Joe See Porsche run. Run, Porsche, Run: `87 911 Carrera |
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11-06-2006, 09:18 PM
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On a great circle route
Join Date: Feb 2003
Location: recalculating...
Posts: 680
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From my 911 Owner's Manual, page 72, "The supposition that tire durability and performance are imune to the effects of storage and age are unfounded. Chemical additives, which make the rubber elastic, lose their effectiveness in the course of time and the rubber becomes brittle and cracks. Therefore, the tires, especially the collapsible spare tire, should from time to time undergo a visual check, To accomplish this, pump up the collapsible spare tire.
Under no circumstances should tires older than six years be used on your Porsche. The age of the tire can be obtained from the "DOT" code number. If for example, the last three numbers read 125, then the tire was produced in the 12th week of 1985. 
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Russ |
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11-07-2006, 01:47 AM
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Max
