Stromberg Carlson TR-1 & TR-2 Spare Tire Carrier Hardware and Mounting Guide

Stromberg Carlson's TR-1 and TR-2 mount a spare travel-trailer tire to a compatible 4-inch square rear bumper. The TR-1 is rigid; the TR-2 folds down for rear access. This guide shows the manufacturer's mounting hardware, original instructions and replacement hardware available from NewRVParts.

See the replacement parts

Select a part to view its full product listing. Compare the pictured component and part number with your original equipment before ordering.

Choose the correct tire carrier

Stromberg Carlson TR-1 rigid black spare tire carrier for a square trailer bumperTR-1 — Rigid carrierFixed spare-tire position on a compatible 4-inch square trailer bumper.View TR-1 carrier
Stromberg Carlson TR-2 folding black spare tire carrier for a square trailer bumperTR-2 — Folding carrierHinged design with pull-pin action and built-in downward stop for rear access.View TR-2 carrier

Original TR-1 / TR-2 installation document

The two-page Stromberg Carlson document identifies the tire-carrier mounting hardware and shows how the U-bolts, tire bolts, bolt clips and retaining plate are fitted. Open it to check the original assembly before installation.

Open the manufacturer tire-carrier instructions (PDF)

On phones, the PDF opens separately for easier reading and zooming.

Parts supplied with the complete carrier

Quantity Mounting component
1 Complete spare-tire carrier assembly
2 3/8-inch U-bolts for bumper attachment
4 3/8-inch flat washers
4 3/8-inch nuts
2 1/2-inch bolts for wheel mounting
2 Bolt clips to retain the wheel-mount bolts
2 1/2-inch lug nuts
1 Black flat wheel-retaining plate

Two U-bolts attach the carrier to the bumper. The two wheel-mount bolts are secured by bolt clips; one supports the wheel at a lug hole, while the second works with the flat retaining plate and lug nut across the wheel centre. Follow the original instructions for final tightening.

Replacement tire-carrier hardware

1TR-A Hardware BagListed for both TR-1 and TR-2 carriers. Includes U-bolts and nuts; the store listing specifies no washers.View 1TR-A hardware
2200 U-Bolt Mounting KitManufacturer replacement U-bolt set with nuts and washers.View 2200 kit
8150-TC Replacement Front PlateManufacturer replacement front-plate component for the tire-carrier assembly.View 8150-TC component
Check the bumper and wheel before ordering. This carrier is for travel-trailer applications with a compatible 4-inch square bumper and the tire sizes specified by Stromberg Carlson. It is not intended for motorhome spare tires. The bumper itself must be structurally suitable for the load and mounting location.

Return to the RV parts diagram index to find other installation and service guides.

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