Tire Mechanic's Resource Tire Changer Mounting Head Insert

Tire Mechanic's Resource Mounting Head Inserts for Wheel Protection

A steel mount/demount head does the hard work of levering a tire bead over a wheel lip, but bare metal and finished alloy wheels are a poor combination. That is the problem Tire Mechanic's Resource addresses with its nylon tire changer mounting head inserts: a replaceable plastic buffer between the steel head and the wheel surface.

The 12-Piece Nylon Insert Set (TMRTI182963)

The brand's offering here is the TMRTI182963 nylon insert rim protector set. These inserts are designed to fit Coats stainless steel mount/demount heads used in tire changers, and the protectors are made of durable nylon and come in packs of 12. The 12-count pack is practical for busy shops, since inserts are a wear item that gets replaced as the nylon picks up marks from repeated use.

Their job is straightforward. They prevent damage to wheel rims during mounting and demounting by acting as a buffer between the metal head and the wheel surface. This helps avoid scratches, gouges, or dents, especially on more delicate or high-end wheels. With polished, painted, and diamond-cut alloys now common, that protection matters for any shop that wants to return wheels in the condition they arrived.

Why Nylon Inserts Make Sense

• Replaceable wear surface: Swapping a worn insert is cheaper and faster than replacing a whole head.
• Reduced metal-to-wheel contact: Nylon is far gentler on finished surfaces than stainless steel.
• Shop-ready quantity: A multi-piece set keeps spares on the shelf between service intervals.

A Brand Built Around Tire Shop Consumables

Tire Mechanic's Resource is known for tire and wheel replacement parts and accessories. The company was founded in 1959 and distributes more than 3,000 automotive service equipment and aftermarket products. Its tire changer line also includes nylon mount/demount heads and duckhead kits for Hunter, Coats, and other popular machines, so the insert set sits within a broader range of tire changer wear parts.

Choosing the Right Insert

Before ordering, confirm that your machine uses a Coats-style stainless steel mounting head, since this set is made for that head design. Check the condition of your existing inserts regularly: once nylon is gouged or has embedded grit, it can transfer damage to the wheel rather than prevent it. Replace inserts at the first sign of wear.

To compare other options, browse the full Tire Changer Mounting Head Insert category, or explore the complete Tire Mechanic's Resource brand page for more tire changer parts and shop tools.