Flatstoppers help keep tires from flat spotting during long term storage. Once the tires are set in the Flatstoppers, they will settle into the concave depression. More of the bottom portion of the tire will be fully supported, thus dispersing the weight of the car more evenly onto the tire and helping to prevent flat spots.
Flatstoppers will not conduct heat or cold to your tires despite changing floor temperatures. They will not damage your floor in any way. Flatstoppers are for tires from 25 inches to 30 inches in diameter and up to 14 inches wide. When used indoors, Flatstoppers also protect finished floors from being stained with tire prints.
Flatstoppers are sold in sets of four ramps and are available in 10", 14"and 16" widths.