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Join Date: Jan 2009
Posts: 544
Tire cracking and ozone generator

I seem to have continuous issues with the sidewalls of my tires cracking around the 5 year mark. My cars are in a climate controlled garage, and never sit out in the sun. Somewhere I believe someone posted that if you do welding the ozone generated by that could cause these issues. I don't weld, but I do run an ozone generator in my garage periodically. Could this be my problem? My 58A is needing tires now, right at the 5 year mark, and my 89 911 also just got replaced at the 5 year mark. Thanks for any input.
Old 10-14-2019, 06:11 AM
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Join Date: Nov 2012
Location: Motown; Palm Beach
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Garage
I can't speak to how much ozone your machine generates, or if you run it often enough for it to matter, but I can tell you that ozone degradation is one of the biggest factors of aging in rubber, along with heat cycling and UV exposure (other chemicals can degrade rubber significantly also, but that is another story). There are additives included in the rubber compounds to address this, but high performance tires (i.e. "sticky" ones) have a less included (they are more "pure" compounds, especially with higher concentrations of natural latex). Dryness is also a factor. Tire dressing helps, but will not stop the process.
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Old 10-14-2019, 12:19 PM
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