Senior VR Member
Join Date: Jul 2008
Location: Second Star to the right, then straight on till morning.
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Actually, rubber and plastic deteriorate in different ways and at rates that vary widely. Causes may be chemical, caused by oxidation or hydrolysis, or may be physical, or even biological. These processes cause changes in the chemical composition, physical properties, and appearance which has compromised the integrity of the materials. UV exposure does not directly affect the rubber as much as you would assume. In fact, the plasticiser used in most tire compounds is actually affected more by ozone (created by UV light) than it is by the direct UV exposure. Also affecting the compounds is atmospheric moisture which has become acidic as well as atmospheric pollutants, such as sulphur dioxide and nitrogen dioxide.
Storing your vehicle indoors does not protect the rubber from being subjected to these environmental contaminants, unless you do so in a temperature controlled environment.
Current Bikes -->
-1969 Indian MX125 -10-2009 to Present
-2014 Honda CTX1300 - 05-2015 to Present
Past Bikes ----->
-1973 Yamaha RD350
-1991 Harley Sportster 883 XL
-2000 Yamaha XV125
-2003 Piaggio Fly
-2004 Suzuki LS650 - 04-2005 to 07-2008
-2005 Boulevard C50 - 07-2008 to 5-2012
-2012 Vulcan 900 - 05-2012 to 05-2015
-2008 Yamaha FZ6 - 11-2008 to 04-2017
-2006 Star Virago - 05-2011 to 06-2017