FlatStoppers(R) keep tires from flat spotting during long periods of storage. FlatStoppers(R) were developed as a solution for people having problems with tires developing flat spots when a vehicle is parked for 30 days or longer. Once tires are set on FlatStoppers (on a level surface), they settle into the pads concave depression, which helps support more of the tire. This disperses the weight of the car more evenly onto the tire helping to prevent any flat spotting. The pads measure 22. 3 long x 3. 5 high x 14 wide, and will accommodate tires up to 12 wide. FlatStoppers(R) will not conduct heat or cold into your tires despite changing floor temperatures. As with all Brute Industries products, Flatstoppers(R) are made with the companys patented super-lightweight 100% solid construction technique making them highly durable, virtually indestructible, and providing a 6,000 lb. vehicle weight capacity. FlatStoppers textured coating prevents sliding across floors - including epoxy-coated floors and RaceDeck(R). FlatStoppers(R) wont scratch or otherwise damage floors, and wont rust. Pit Stop USA offers Race Ramps Flatstoppers(R) - (Set of 4) RR-FS at low everyday prices. Be sure to check out all of our products from Race Ramps including Race Ramps Car Storage and Display.