Keep your exposed spare tire protected year-round. The ADCO 1731 is a heavy-duty vinyl spare tire cover sized for 34-inch diameter tires, shielding the rubber from UV degradation, ozone cracking, rain, and road grime that shortens tire life before the spare is ever needed.
Spare tires mounted on the rear of motorhomes, fifth wheels, travel trailers, and utility trailers take constant abuse from sun exposure and weather. UV radiation breaks down rubber compounds over time, causing sidewall cracking, dry rot, and surface crazing -- all of which compromise the tire's structural integrity even if it has never been driven on. The ADCO 1731 cover wraps that investment in heavy-duty vinyl so the tire is ready to perform when it matters.
Sized specifically for 34-inch diameter tires (ADCO Size A), this cover fits snugly with a hollow bead welt cord and an elasticized back edge that conforms to the tire and resists wind lift on the highway. No loose, flapping material -- the fit is secure enough for highway travel without additional straps in most applications.
Thick outer vinyl resists UV rays, ozone, moisture, and road debris that degrade exposed tire rubber over months of storage or travel.
Hollow bead welt cord with elasticized back edge wraps firmly around the tire edge to stay in place during storage and highway driving.
Seams are stitched with tear-resistant nylon thread to prevent splitting at stress points even under tight fitment or temperature cycling.
ADCO backs this cover with a limited 3-year warranty against defects, reflecting confidence in the material quality and construction.
Prolonged sun exposure is the leading cause of premature dry rot in spare tires that are never driven. A properly fitted cover can extend usable tire life significantly by blocking the UV radiation and ozone that attack rubber compounds. This is especially important in southern and southwestern climates where UV index is high year-round.
ADCO spare tire covers are sized by tire diameter, not by tire code. Measure the overall outside diameter of your mounted spare tire from tread surface to tread surface across the center. This cover is designed for tires measuring 34 inches in outside diameter. Common RV tire sizes that fall in this range include many ST235/85R16 and similar light truck / trailer tires -- verify your specific tire's measured diameter before ordering. If your tire measures larger or smaller, ADCO offers additional size options.
The elasticized back is designed to hold the cover securely during normal highway travel. For extended high-speed driving or in areas with frequent strong crosswinds, inspect cover fitment before departing. Not all rear-mounted spare configurations are identical -- verify the cover seats fully around the tire bead before driving.