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BAL 28218B Hide A Spare 68" - 75" I-Beam Frame Underslung Mount

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List Price: $262.99

: $219.49

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Part Number: 28218B
Manufacturer: BAL RV Products
NOTE: Ships Ground Only

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BAL Hide-A-Spare™ Under-Chassis Tire Carrier — Model 28218B (Fits 68"–75" I-Beam Frames)

The BAL Hide-A-Spare 28218B mounts your spare tire up under the trailer between the I-beams, keeping it clean, protected, and out of the way—yet easy to access when you need it. This 28218B size fits trailers with an I-beam frame spread of 68" to 75", making it a smart upgrade when bumper or interior space is limited.

Under-chassis storage frees up bumper/rear wall for racks and accessories.
Quick access with slide-out / drop-down action to reach the spare at ground level.
Protection from UV & theft vs. exposed bumper-mounts.
Rigid steel construction with secure pin/strap retention to minimize rattle.
Clean look—no bulky spare on the back of the rig.

What’s Included

Hide-A-Spare under-chassis carrier assembly sized for 68"–75" I-beams
Mounting brackets & hardware
Retaining pin/strap
Installation instructions

Fit Notes (Read Before Ordering)

For I-beam frame trailers with 68"–75" outside-to-outside beam spacing.
Intended for center under-body mounting between the beams.
Verify clearances around tanks, plumbing, steps, suspension, and stabilizers.
Generally suitable for most 14"–15" trailer spares and some 16" depending on section width and vertical clearance.
Confirm the overall diameter and width of your spare and compare to available under-chassis space.
Carrier holds one standard trailer spare; ensure weight does not exceed carrier rating and fastener capacity.

Unsure if your tire will clear? Tell us your tire size (e.g., ST225/75R15) and the vertical clearance between the bottom of the frame and the nearest under-body components.

Specifications

Manufacturer: BAL (Norco Industries)
Model / Part No.: 28218B (Hide-A-Spare)
Frame Compatibility: I-beam frames, 68"–75" spread
Mount Type: Under-chassis, between-frame slide/drop carrier
Construction: Heavy-gauge steel, corrosion-resistant finish
Typical Tire Range: 14"–15" trailer spares; select 16" may fit (verify)
Hardware: Included (drilling required on most installs)
Operation: Release pin/strap → lower/slide to access spare

Installation Overview

Confirm your I-beam spacing is within 68"–75" and choose a clear bay between cross-members.
Mock-up the carrier with your spare to verify OD/width and drop path to ground.
Mark/drill frame per instructions; treat bare metal as needed.
Bolt carrier and torque hardware to spec.
Load spare, secure with strap/pin, and check for interference through suspension travel.

Tip: Use thread locker and re-torque after the first trip. A thin rubber isolator between bracket and frame can reduce vibration.

Which Hide-A-Spare Fits My Trailer?

	28218B	28217B
Frame type	I-Beam trailer frames	I-Beam trailer frames
Frame spread (outside-to-outside)	52″ – 60″	68″ – 75″
Mount style	Recessed mount (between beams, under-chassis)	Recessed mount (between beams, under-chassis)
Operation	Lower / slide out to ground-level access	Lower / slide out to ground-level access
Typical spare sizes*	Most 14″–15″; some 16″ if clearance allows	Most 14″–15″; some 16″ if clearance allows
Hardware	Mounting brackets & hardware included (drilling likely)	Mounting brackets & hardware included (drilling likely)
Best for	Narrow/mid I-beam frames where beams are closer together	Wider I-beam frames needing between-beam storage

*Always verify tire overall diameter & width, vertical clearance, and interference with tanks, plumbing, suspension, steps, and stabilizers before ordering.

Viewing 28218B (52″–60″ I-Beam Enclosed Belly) Shop 28217B (68″–75″ I-Beam Recessed)

Great For

Travel trailers & toy haulers with exposed bumpers already in use
Owners replacing cable-winch style holders with a more secure tray
Clean exterior look while keeping the spare on-board and accessible

FAQs

Will it hold my 16" LT spare?
Often yes, but it depends on section width and vertical clearance under the frame. Measure tire OD/width and the available space; contact us with numbers and we’ll confirm.

Does this fit box-tube frames?
No—this 28218B is sized for I-beam frames with 68"–75" spread. Other Hide-A-Spare models cover different frame types/spreads.

Welding required?
Typically bolt-on (drilling required). Professional install recommended if you’re unsure about clearances or hardware selection.

How do I access it roadside?
Release the pin/strap, lower, then slide/drop the tray to reach the spare at ground level. Choose an install location with safe roadside access.

Why Buy from RVupgrades

Phone, chat, email & text support from RV specialists
Fast shipping with clear ETAs
Hassle-free returns and fitment help

SKU/MPN: 28218B • Brand: BAL • Category: Tire Carriers / Under-Chassis Storage

Hide a Spare

MODEL 28215B (Use 28217B for this unit has been discontinued): 68” to 75” frame, Recessed mount for trailers without enclosed underbelly

MODEL 28216B (Use 28218B for this unit has been discontinued): 68” to 75” frame, Underslung mount for trailers with enclosed underbelly

MODEL 28217B: 68” to 75” frame, I-Beam Recessed mount for trailers without underbelly enclosure

MODEL 28218B: 68” to 75” frame, I-Beam Underslung mount for trailers with enclosed underbelly
Measurements are from side to side of each exterior edge of the vertical frame.

	Enclosed Underbelly - when a trailer has a sheet of plastic, fiberglass, aluminum or other material that is installed horizontally beneath the trailer frame. This sheet is attached from front to back and from Driver’s to Passenger’s side frame rail. It protects the bottom of the trailer from road debris and the elements. The Hide A Spare that is ‘underslung’ will work on an Enclosed Underbelly trailer.
	Recessed Underbelly - this is a trailer that has no material concealing the bottom of the trailer frame. When looking underneath the trailer, you will be able to see waste tanks, electrical and plumbing lines, wiring, and the bottom of your trailer floor. You will also see the exposed frame rails and crossmembers (steel supports running from one frame rail across to the other frame rail). Using this model will allow you to recess the spare tire up into the frame limiting ground clearance loss.
	Underslung - Hide A Spare that is used with Enclosed Underbelly trailers. It allows the spare tire to be positioned below the frame as opposed to recess into the cavity between the frame rails. Underslung models should be mounted as close to the axles as possible as it decreases ground clearance
	I-Beam Frame - each frame rail will look like a capital ‘I’ from the end of the trailer. Each side of the frame (passenger and driver) will have a horizontal lip on the lower, exterior edge. The Hide-a-Spare fitting the ‘I’-beam frame will have brackets that are designed to avoid this lip.
	Other Frame Types - frames that are not ‘I’-beams will have a flat, smooth vertical surface. These are called Box, Channel, ‘C’-frame, or ‘Z’-frame. They will not have the lip the ‘I’-beam and will have a flat, vertical bracket can be used on the Hide-a-Spare
	Pivot Bracket - the Hide-a-Spare bracket that is mounted permanently to the Driver’s side and acts as a hinge when the Hide-a-Spare is lowered to remove the tire.
	Storage Bracket - this mounts permanently to the Passenger’s side and allows the Hide-a-Spare to secure to the trailer using a removable Locking Knob and Cotter Pin


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