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Old 04-15-21, 05:44 PM
  #13  
JohnDThompson 
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It depends on how they're stored. Exposure to heat, UV light, and/or ozone will accelerate degradation. Cool, dark, dry storage means they can last a long time. Premium tubular tires would be aged prior to sale and use to give the rubber a chance to harden a bit. I have some 30+ year old tubulars that still look new and hold full pressure:
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