Flat Her Tire

"Tires are composed of various types of material and rubber compounds, having performance properties essential to the proper functioning of the tire itself," says Michelin Tires in their brochure Michelin RV Tires Guide. Chief among these performance properties is flexibility. An assortment of plasticizers and other chemicals are included in the rubber formula to help the tire stay flexible.

"These component properties evolve over time…this evolution depends upon many factors such as weather, storage conditions, and conditions of use," Michelin notes. A tire gradually loses its flexibility in the presence of damaging factors encountered both outdoors – such as ozone, sunlight (UV light), moisture – and in storage – such as oil and grease.

The following storage tips are mainly from Goodyear Tires' Recreational Vehicle Tire and Care Guide and Michelin's RV Tires Guide.