Bob
First off thanks for the kind words. And I might add it was your RV net sig that pointed me here....

As I did not know we have this site yet. Been wanting one and now I see we have it.
On the shingle or "slippers" like Kitty calls them, this is tip I picked up from a fellow camper. I'll have to research it more, but I do believe it has to do with the wet wicking up the tire and over time can reduce over all tire life.
Since I'm sort of super protected on my T2499, I go the extra mile on keeping here in tip top shape.
As a side note, I have had many a farm tire split and crack from sitting outside in the dirt all winter long. That is sort of the opposite extreme as on concrete but helps add some level of credence to the theory.
When I find out more on the chemical reaction going on, I'll post back.
Thanks
John
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2004 Sunline T310SR
2005 Ford F350 Lariat, V10 with 4.10
CC, Short Bed. Integrated Brake Controller
Reese HP trunnion bar hitch with HP DC