16" x 6" Modular Trailer Wheel
Updated June 23, 2026
This 16-inch by 6-inch modular trailer wheel is a steel rim designed for use on travel trailers, fifth-wheel campers, horse trailers, and heavy-duty utility trailers. Its modular construction means the center disc is welded or riveted to the rim base, offering a durable, serviceable wheel that can be disassembled for tire mounting or refinishing. Available in silver or tan/off-white finishes and with either an 8-lug or 12-lug 6.5-inch bolt circle, this wheel suits a wide range of trailer applications.
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Design and Construction
The wheel features a modular design where the center disc (spider) is separate from the rim barrel, allowing for easier tire changes and potential replacement of individual components. It is made from steel, providing strength and resistance to the heavy loads and rough road conditions typical of trailer use. The silver or tan powder-coated finish offers corrosion protection, though the tan variant is often chosen for a classic or vintage look on campers and RVs.
Fitment and Compatibility
This wheel is offered in two common bolt patterns: 8 on 6.5-inch and 12 on 6.5-inch. The 8-lug version is widely used on medium-duty trailers, including many boat trailers, utility trailers, and some RVs. The 12-lug pattern is typically found on heavier trailers, such as large fifth-wheel campers and commercial equipment trailers. The wheel has a width of 6 inches and a diameter of 16 inches, fitting tires with a section width around 215-235 mm (e.g., ST215/75R15 or ST235/80R16). Always verify your trailer's bolt pattern, offset, and load rating before purchase.
Installation Notes
When installing, use the correct lug nuts for steel wheels (typically conical seat) and torque them to the trailer manufacturer's specification, usually in a star pattern. Because this is a modular wheel, ensure the rim and disc are properly aligned before tightening. The wheel may be hub-centric or lug-centric depending on the trailer hub; if hub-centric, the center bore must match the hub pilot diameter. After mounting the tire, balance the assembly to prevent vibration at highway speeds.
Common Issues and Inspection
Steel trailer wheels can develop rust, especially in saltwater environments. Inspect the rim for pitting, cracks, or bent flanges, particularly around the lug holes and weld joints. Modular wheels may experience loosening of the disc-to-rim fasteners over time; check these periodically. Bent rims from potholes or overloading can cause tire bead leaks or uneven wear. If the wheel is out of round, replacement is recommended rather than repair.
