PAULINN Trailer Spare Tire Mount — 3-Nuts Universal Carrier for 4/5/6/8‑Lug Wheels, Fits 4"–6" Bolt Patterns, 180 lb Capacity

PAULINN 3-Nuts Upgraded Trailer Spare Tire Mount is a heavy-duty, universal carrier that secures trailer spare tires (4/5/6/8 lug) on multiple bolt patterns and supports up to 180 lbs.

This spare tire carrier is engineered for utility trailers, boat trailers, campers and RVs that need a reliable, low-profile mounting solution. Built from industrial-grade solid iron with a welded rectangular back plate and sandblasted finish, the bracket resists corrosion and holds spare tires firmly in place without drilling. It accepts a wide range of lug configurations and bolt circle diameters so you can match most common trailer wheels.

What wheel lug patterns and bolt circles does this carrier support?

The PAULINN 3-Nuts mount was designed to fit many popular trailer wheel setups. It accommodates 4-, 5-, 6- and 8-lug wheels across several bolt circle diameters, letting you mount spares from different vehicle types without swapping brackets.

• 4-lug: 4", 4.25", 4.5" bolt circles
• 5-lug: 4.25", 4.5", 4.75", 5", 5.5" bolt circles
• 6-lug: 5.5", 6" bolt circles
• 8-lug: 6.5" bolt circle

How strong and stable is the mount for long trips or rough roads?

Strength and stability are central to this design: a welded structure with an angled, raised mount and a rectangular back plate improve load distribution and clamp force. The bracket is rated to carry up to 180 pounds, suitable for most spare tires used on trailers, RVs and boats.

• Industrial solid iron construction for high tensile strength
• Welded joints and reinforced plate to limit flex under load
• Angled, raised profile reduces stress and keeps the tire secure

Will it resist rust and stay reliable outdoors?

The mount receives a sandblasted finish that smooths the surface and improves adhesion for protective coatings. This helps slow corrosion in outdoor and marine environments when combined with normal maintenance such as touch-up paint or rust inhibitors.

• Sandblasted surface for improved corrosion resistance
• Solid-iron body built to handle exposure when installed properly
• Stainless or coated fasteners recommended for salty environments

Is installation difficult and what mounting sizes work with my rack?

Installation is straightforward: no drilling is required and the mount uses supplied bolts of different lengths to clamp to crossbeams. It fits racks under 6" in length and with a width between 2" and 4"; measuring your trailer shelf thickness first ensures a correct fit.

• Clamps to steel beams without drilling — install with basic wrenches
• Includes multiple bolt lengths to match varying shelf thicknesses
• Height adjustment lets you choose clearance and orientation

Who is this for: The PAULINN 3-Nuts Universal Spare Tire Mount is for trailer owners who need a rugged, no-fuss spare carrier that fits multiple lug patterns and bolt circles. It suits boaters, RV and camper owners, utility trailer users and anyone who wants a heavy-duty, low-profile mount that’s easy to install and built to handle typical trailer spares up to 180 lbs. Measure your rack width and bolt pattern before ordering to ensure compatibility, and contact PAULINN support if you need help matching your wheel specifications.