Dutton-Lainson 22128
Long U-bolt tire holder · 8, 9 or 12 in rim sizes
Zinc TUFFPLATE; mounting nuts included
View exact carrierDutton-Lainson Spare Tire Carriers: U-Bolt vs Offset Brackets
A trailer spare tire mount must match both the wheel and the trailer frame. Dutton-Lainson offers a simple extended U-bolt style for smaller rims, a raised side-offset bracket for medium wheel sizes, and an extra-offset carrier for larger 5- or 6-hole trailer rims. These are different mounting assemblies, not merely different finishes of the same product.
Pick the mounting layout first
22128 — simple long U-boltThe 6220 holder accepts the manufacturer's specified 8-, 9- or 12-inch, 4- or 5-hole rims. Its extended U-bolt reaches around a wider tongue; mounting nuts are included.
22120 — raised and side-offsetThe 6121 bracket accommodates 9–14-inch wheels with 4- or 5-hole rims on rectangular tongues up to 3 × 5 inches. It offsets the wheel 4½ inches sideways and 4¾ inches upward.
22145 — extra-offset bracketThe 6126 carries specified 13–15-inch wheels with 5- or 6-hole rims on rectangular trailer tongues 2–3 inches wide and 3–5 inches tall. Its angled bracket helps keep the tire clear of the hull.
Dutton-Lainson spare tire carrier comparison
| MPN / Model | Design | Nominal wheel sizes | Rim holes | Trailer tongue |
|---|---|---|---|---|
| 22128 (6220) | Long U-bolt tire holder | 8, 9 or 12 in | 4 or 5 hole rims | Extra length for wider tongues; measure actual opening |
| 22120 (6121) | Raised offset spare-tire bracket | 9–14 in | 4 or 5 hole rims | Rectangular tongues up to 3 in wide × 5 in tall |
| 22145 (6126) | Extra-offset spare-tire bracket | 13–15 in | 5 or 6 hole rims | Rectangular tongues 2–3 in wide × 3–5 in tall |
Confirm the exact wheel and tongue dimensions. Manufacturer wheel sizes refer to nominal rim diameter, not outside tire diameter. Hole count alone does not confirm wheel bolt-circle compatibility, and a rectangular-tongue specification does not mean a carrier automatically fits a round or unusually shaped trailer frame. Check clearance around the boat, coupler, winch post and ground.
All three models use a zinc-plated TUFFPLATE finish. The 22120 and 22145 are complete bracket assemblies supplied with mounting hardware and have a locking hole; the 22128 is a simpler U-bolt holder supplied with nuts, not a raised welded bracket.
Measure the trailer before ordering
- Measure the spare wheel: identify rim diameter, hole count and bolt circle. Confirm the mounting arrangement in the manufacturer's instructions rather than assuming any 5-hole rim fits another 5-hole carrier.
- Measure tongue width and height: the 22120 is intended for rectangular tongues up to 3 × 5 inches. The 22145 specifies 2–3 inches wide and 3–5 inches tall. The 22128 uses an extended U-bolt; verify its actual reach and clearances.
- Choose clearance and offset: evaluate how far the tire must stand away from the boat, bunks, coupler, trailer lighting and ground. The extra-offset 22145 is a different design from 22120.
- Check hardware included: 22128 includes mounting nuts; 22120 and 22145 include bracket mounting hardware. Any padlock or theft-deterrent cable must be selected separately where needed.
- Mount to a suitable structural area: follow the trailer and Dutton-Lainson installation instructions, check bolt engagement and torque, and re-inspect the bracket after travel.
Shop matching Dutton-Lainson spare tire mounts
These cards link to the exact products in the NewRVParts catalog. Orders ship from supplier warehouses, without warehouse viewing or pickup.
Dutton-Lainson 22120
Raised offset spare-tire bracket · 9–14 in rim sizes
Zinc TUFFPLATE; bracket mounting hardware included
View exact carrier
Dutton-Lainson 22145
Extra-offset spare-tire bracket · 13–15 in rim sizes
Zinc TUFFPLATE; bracket mounting hardware included
View exact carrierRelated trailer equipment
Need to compare other trailer components? Visit our Dutton-Lainson tongue jack comparison and C.E. Smith spare tire carrier guide. Those guides cover different equipment and should not be used to infer hardware interchangeability.
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