Keep your spare tire in road-ready condition with the ADCO 01-1962 Size B spare tire cover. Built from heavy-duty vinyl with UV-inhibiting additives, this cover shields your tire from sun damage, ozone cracking, and weathering while the rig is parked or in storage. A secure elasticized back and hollow bead welt cord keep it locked in place even in windy conditions.
A spare tire that has been sitting exposed to the sun for a season or two can develop sidewall cracking and rubber degradation long before it is ever needed. Ozone and UV exposure break down the rubber compounds, leading to dry rot, reduced flexibility, and potential failure -- all without a single mile of use. The ADCO Size B cover is a simple, low-cost way to protect that investment.
ADCO has been making RV and trailer protective covers for decades. The spare tire cover line follows the same construction approach: durable vinyl shell, reinforced seams, and a fit designed specifically for the dimensions of common RV, travel trailer, and fifth-wheel spare tires.
UV-resistant vinyl construction resists fading, cracking, and surface degradation through extended outdoor exposure and seasonal storage.
A hollow bead welt cord runs the perimeter with an elasticized back for a snug, stay-put fit around the tire without straps or fasteners.
All seams are stitched with tear-resistant nylon thread, preventing separation at stress points over repeated installation and removal cycles.
ADCO sizes covers by actual tire diameter. Size B fits a 32-1/4" diameter spare -- measure your tire before ordering to confirm fitment.
ADCO spare tire covers are sold by measured tire diameter, not by tire code (like LT265/70R17). That means you need to measure the overall diameter of the mounted tire, not just read the sidewall code. A cover that is too loose will blow off in transit; one that is too tight will be difficult to seat and may stress the seams.
A 32-1/4" overall diameter is common among several popular RV and trailer tire sizes. While exact overall diameter can vary slightly by brand and load range, the following tire codes frequently measure in the Size B range:
The Polar White finish reflects heat and helps keep the tire cooler during storage in direct sunlight. White covers also show soiling quickly, which is a reminder to inspect and clean the cover periodically.