Liamoy Spare Tire Carrier for Trailer — Zinc-Plated U-Bolt Side Mount, Fits 4- or 5-Lug Wheels, Fits Frames up to 4"

Liamoy's zinc-plated U-bolt spare tire carrier is a side-mount bracket that secures 4- or 5-lug trailer spare wheels to frames up to 4" wide for boats, jet skis, and utility trailers.

This compact spare tire mount is built from thick steel, hot-dip galvanized for corrosion resistance, and designed to clamp to the trailer throat so you can carry a full-size spare without welding or major modification. It ships with U-bolts and four lug nuts, accepts common 4- or 5-lug wheel patterns (including 5-to-4-1/2 adapters), and uses a twin-nut locking design to reduce the chance of loosening on the road. Before ordering, measure your trailer frame width and spare wheel bolt pattern to ensure a proper fit.

How does this mount attach to different trailer frames?

The Liamoy mount uses a U-bolt clamping system that wraps around the trailer throat and tightens against the bracket plate, so no drilling or welding is required for most applications. It accommodates frames up to 4" wide and up to 4" high, fitting common angle or C-channel rails found on boat and utility trailers.

• Fits trailer frames up to 4" wide and 4" high.
• U-bolt wraps and clamps to the existing frame throat.
• Works on square, C-channel, or rounded rails when positioned correctly.
• Requires basic hand tools to tighten the nuts and secure the mount.

Will it fit my wheel bolt pattern and spare tire size?

The bracket supports 4-lug and 5-lug wheel patterns, including common adapters (e.g., 5-to-4-1/2). Always measure the bolt hole spacing on your spare wheel before buying to confirm compatibility. The carrier is intended for full-size trailer spare tires of typical passenger/trailer wheel diameters rather than oversized off-road tires.

• Accepts 4-lug and 5-lug wheels, compatible with 5-to-4-1/2 adapters.
• Designed for standard trailer and passenger spare tire diameters.
• Not intended for very large off-road or heavy-duty commercial tires.
• Confirm bolt pattern and rim centerhole alignment before installation.

How durable is the bracket in marine or salty conditions?

The mount is constructed from thick steel and receives a galvanizing process to slow rust and corrosion in wet or coastal environments. While the zinc plating adds substantial protection, occasional inspection and maintenance—such as rinsing with fresh water after salt exposure—will extend service life.

• Hot-dip/zinc plating resists rust better than bare steel.
• Thick steel core reduces bending or deformation under load.
• Inspect nuts and mounting points periodically for corrosion.
• Recommended to rinse after saltwater exposure and apply anti-seize if desired.

How secure is the tire once mounted and what hardware is included?

Liamoy's spare carrier uses a twin-nut locking design on the U-bolt studs to minimize loosening from vibration and road shock. The package includes the U-bolts and four lug nuts needed to mount most spare wheels, so you have the basic hardware to install and carry a spare immediately.

• Double-nut configuration reduces risk of a single nut backing off.
• Included hardware: U-bolts and four lug nuts.
• Torque nuts to manufacturer-recommended specs for safety.
• Check tightness after first few miles and at regular intervals.

Who is this for: The Liamoy U-bolt spare tire carrier is aimed at boaters, fishermen, jet-ski owners, and trailer users who want a simple, low-cost way to carry a full-size spare without cutting or welding their frame. It’s suitable for owners of small to mid-size trailers with standard 4"-wide frames and common 4- or 5-lug wheels who value corrosion resistance and straightforward installation.