Bead breaker
Encyclopedia
A bead breaker is a tool used for separating tire
Tire
A tire or tyre is a ring-shaped covering that fits around a wheel rim to protect it and enable better vehicle performance by providing a flexible cushion that absorbs shock while keeping the wheel in close contact with the ground...

s from rims
Rim (wheel)
The rim of a wheel is the outer circular design of the metal on which the inside edge of the tire is mounted on vehicles such as automobiles. For example, on a bicycle wheel the rim is a large hoop attached to the outer ends of the spokes of the wheel that holds the tire and tube.In the 1st...

. The inside ring of the tire is called the lip, and the bead on the lip seals to the rim in a radial-ply tire, trapping the air inside. Often, the bead can become frozen to the rim after rusting occurs, requiring the use of a bead breaker in order to be removed.

A need was experienced by avid 4x4 enthusiasts and overland travel
Overland travel
Overland travel or overlanding refers to an "overland journey" - perhaps originating with Marco Polo's first overland expedition in the 13th century from Venice to the Chinese court of Kublai Khan. Today overlanding is a form of extended adventure holiday, embarking on a long journey, often in a...

ers for a simple tool to effectively and efficiently remove the tire from the rim of a wheel, in cases where a tire requires repairs to the inside. Automated equipment exist for removing tires but due to the high cost and lack of portability these are were not suitable. In addition beads frozen by heat and rust
Rust
Rust is a general term for a series of iron oxides. In colloquial usage, the term is applied to red oxides, formed by the reaction of iron and oxygen in the presence of water or air moisture...

to the rim must often be broken free manually. In these case the bead breaker is ideal. Used like a chisel, a bead breaker leverages a mechanical advantage to drive the bead away from the rim.
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