|10-02-2011 02:13 PM|
There is no greater enemy of rubber than UV and ozone. To combat these environmental effects, tires are made with a "competitive absorber" known as carbon black. This compound is what gives tires their color. The molecules in carbon black absorb UV rays converting them to heat that can dissipate off the tire. Over time, however, carbon black becomes depleted and the rubber turns gray and brittle. By shading tires with UV-blocking covers, you are effectively extending the life of tires.
Tires that sit for long periods are even more susceptible to UV damage because driving actually helps tires remain supple. When a tire is driven the flexing of the rubber causes it to become heated, stretched and worked; a “kneading” process that stirs protective wax compounds that rise to the surface, keeping the rubber protected and in good shape. Without flexing, tires become prime candidates for premature breakdown. Add constant exposure to UV rays and the aging process is accelerated.
|10-01-2011 06:40 PM|
|mathjak||What about the ones on the vehicle?. they are all exposed to the elements equally|
|10-01-2011 03:35 PM|
|1970Buick||The covers actually keep the tire from getting exposed to the elements. If uncovered the same section of tire is always exposed to UV rays and will eventually dry rot/break the rubber down. If you keep them protected with some sort of product like 303 then you will be good also if you like the no cover look.|
|10-01-2011 11:35 AM|
|shell||Mine came covered, but I changed it to this|
|10-01-2011 09:16 AM|
|10-01-2011 09:03 AM|
|10-01-2011 09:00 AM|
Cover Spare Tire?
What benefits, if any, are there to covering the spare tire? Seems to me that the matching tire/wheel looks much better uncovered.