SEACHOICE Lockable Spare Tyre Carrier for Boat Trailer — Zinc-Plated U-Bolt, Fits 8–15" Wheels

Seachoice’s lockable zinc-plated U-bolt spare tire carrier secures a trailer spare on a tongue or frame up to 3" wide, fitting 8–14" and most 15" wheels.

When you tow a boat, a loose spare tire is vulnerable to theft and damage. This compact carrier offers a simple, corrosion-resistant mounting solution that clamps to trailer tongues or frames up to three inches across. Built to accommodate common rim patterns and wheel sizes, it keeps your spare accessible without taking up extra deck or storage space.

How does this carrier attach to my trailer?

The carrier uses a zinc-plated U-bolt that wraps around the trailer tongue or frame and tightens with nuts. Installation requires basic hand tools and takes only minutes, so you can mount it before a trip or retrofit it later.

• Fits tongues or frames up to 3" wide
• Zinc plating increases corrosion resistance in marine environments
• Secures with standard nuts on the U-bolt for straightforward installation

Will this fit my spare wheel and rim type?

The design supports a wide range of commonly used trailer wheels. It’s compatible with both four- and five-hole rim patterns and covers most small- to mid-size trailer tire diameters.

• Fits all 8" to 14" wheels and most 15" wheels
• Works with 4-hole and 5-hole rim configurations
• Holds typical trailer spare tire widths without modification

Is the spare tire locked in place?

The carrier is built to accept a padlock for theft deterrence but does not include a lock. A user-supplied padlock threads through the assembly to prevent quick removal of the wheel.

• Lock-ready design allows standard padlocks
• Lock not included — choose a marine-rated padlock for best durability
• Simple removal when you need the spare, quick to secure afterward

What materials and part references should I know about?

Constructed from zinc-plated steel, the carrier balances affordability with rust resistance suitable for trailering near water. Reference the manufacturer part number when ordering or matching replacement pieces.

• Zinc-plated steel construction for weather resistance
• Manufacturer part number: 50-53851 for ordering and support
• Compact profile keeps the spare close to the tongue to avoid clearance issues

Who is this for: This carrier is ideal for boaters, anglers, and watersports enthusiasts who tow trailers and want an affordable, easy-to-install solution to keep a spare tire on the tongue or frame. It’s especially useful for owners of small to medium trailers that use 8–15" wheels and for anyone who prefers a lock-ready mounting option without bulky racks or extra hardware.