HOW IT WORKS
Most flats are caused by a pinch or tear of the inner tube where it interacts with the rim and/or bead of the tire. Pinch flats are a lot more common when running low tire pressures and is why most riders avoid low tire pressure. The first type pinch flat (TYPE 1 PINCH FLAT below) occurs when the bead of the tire is knocked inward from its seat in the rim. When this occurs the bead of the tire catches the inner tube in the rim causing a pinch or tear. Tube Saddle® eliminates this type of pinch flat by isolating the tube from the rim and bead of the tire. The second type tube pinch (TYPE 2 PINCH FLAT below) occurs when bottoming the tire into the rim. When this occurs the inner tube is “sandwiched” on itself inside the tire around the bead of the tire and rim. When the impact is sufficient, the inner tube tears at the sandwich point. At the rim lock (not shown), this type of pinch flat is much more likely to occur. Tube Saddle® eliminates this type of pinch flat by providing a layer of foam material in the “sandwich” region that is softer than the inner tube. Tube Saddle® absorbs and dissipates the impact, and if anything tears it is the foam material, not the inner tube. Tube Saddle® isolates your inner tube from the rim, the bead of the tire, and the rim lock.