AnRVAndADog said:
Sorry,
nothing circulates in the rubber,
nothing is "brought to the surface" in the rubber. And the "oils" you mention aren't even oils. Start here:
https://tirenews4u.wordpress.com/2010/08/17/tire-ingredients/
Well, you can believe what you want. I prefer to base my opinions on industry experts, and the manufacturer information taken directly from the Michelin Tire web site.
https://www.michelinman.com/img/store/michelin_us/exit/pdf/Michelin_Replacement_Owners_Manual_Warranty_MDW41156_REV_0716.pdf
The following is an excerpt taken from the above web site, page #16:
STORAGE
Tires contain materials to protect their outer surfaces from ozone and
weather checking. As the tire rolls and flexes, those materials continually
migrate to the surface, replenishing this protection throughout the normal
use of the tire. Consequently, when tires sit outdoors, unused for long
periods of time (a month or more), their surfaces become dry and more
susceptible to ozone and weather checking, and the casing becomes
susceptible to flat spotting. For this reason, tires should always be stored in
a cool, dry, clean, indoor environment. If storage is for one month or more,
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eliminate the weight from the tires by raising the vehicle or by removing
the tires from the vehicle. Failure to store tires in accordance with these
instructions could result in damage to your tires or premature aging of
the tires and sudden tire failure. When tires are stored, be sure they are
placed away from sources of heat and ozone such as hot pipes and electric
generators. Be sure that surfaces on which tires are stored are clean and
free from grease, gasoline or other substances which could deteriorate the
rubber. Tires exposed to these materials during storage or driving could be
subject to sudden failure.
One reason why your spare tire should be included in the tire rotation
schedule is that temperatures in a vehicle?s closed trunk, especially in sunny
geographical areas, can become high enough so that, over a sustained
period, they can cause small cracks or other changes to the properties of a
tire stored in the trunk. An accumulation of such changes can weaken the
tire and, especially if the tire is not kept properly inflated, make it unsafe
to use when it is needed.
Use tire covers all the time, (except when driving).
That pretty well covers it for me.
