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ADCO Ultra Tyre Gard Black Bus Size RV Tire Covers 40-42 Inch -- Part 3977 -- Set of 2

ADCO 3977 Ultra Tyre Gard black flannel-backed vinyl bus-size RV tire covers fitting 40-42 inch tires, sold as a pair with bungee-ball fastening system.
ADCO 3977 Black Bus Size Ultra Tyre Gard - 40-42"
 
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List Price: $56.70
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Part Number: 3977
Manufacturer: ADCO

Quantity in Stock :32

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ADCO Bus Size -- 40-42" Sold as a Pair ADCO Ultra Tyre Gard Black Bus Size Tire Covers -- 40-42 Inch (Part 3977)

Protect your big-rig investment from UV damage, ozone cracking, and weather exposure with the ADCO Ultra Tyre Gard. Engineered specifically for bus-size tires in the 40-42 inch range, this heavy-duty flannel-backed vinyl cover set delivers a snug, custom-fitted look -- and comes with two covers so you can tackle both drive axle tires in one order.

Heavy-Duty Protection Built for Large Motorhome and Bus Tires

Large-diameter tires on Class A motorhomes, converted buses, and high-roof coaches represent a significant investment. UV rays are the number-one cause of premature sidewall cracking and dry rot -- damage that can lead to dangerous blowouts even on tires with plenty of tread remaining. The ADCO Ultra Tyre Gard is purpose-built to stop that degradation before it starts.

The cover wraps the entire exposed sidewall and tread area of tires measuring 40 to 42 inches in diameter. The flannel-backing cushions the tire surface and wicks away any moisture that gets past the outer shell, while the vinyl exterior repels rain, road spray, and cleaning chemicals.

Flannel-Backed Vinyl Shell

Heavy-duty vinyl outer layer repels liquid and blocks UV. Soft flannel inner lining prevents abrasion against the tire sidewall and wicks condensation.

Bungee-Ball Fastening System

Rear bungee-ball closure with brass-reinforced grommets cinches the cover tight against the wheel, preventing wind lift and keeping the fit snug in high-wind camping conditions.

Double-Needle Overlapping Seams

Overlapping seams sewn with double-needle stitching add structural integrity and resist stress cracking at the edges -- the most common failure point on lesser tire covers.

Universal Black Finish

Neutral black color pairs with virtually any RV color scheme. Resists fading during extended outdoor storage without looking out of place at a rally or campground.

Why Tire Covers Matter for Long-Term Storage

RV tires age from the outside in. Even in a covered carport, reflected UV and ground ozone attack the rubber compounds in sidewalls continuously. ADCO's own testing and decades of customer use demonstrate that properly fitted tire covers can extend sidewall life significantly -- delaying the costly 5-7 year tire replacement cycle common on parked motorhomes.

For rigs stored outdoors in high-UV climates (Southwest desert, Florida sun, high-altitude parks), tire covers are not optional equipment -- they are a maintenance requirement. The Ultra Tyre Gard is among the most durable options in ADCO's lineup, designed for RVers who store for months at a time and expect the covers to survive multiple seasons.

Sold as a Pair: Each order includes two (2) Ultra Tyre Gard covers. One pair covers a single drive axle. For a typical Class A motorhome with dual rear axle tires (4 exposed tires), order two pairs.

Fitment Guide -- Getting the Right Size

ADCO sizes its Tyre Gard covers by overall tire diameter, not by tire code. To confirm this cover fits your tires:

  • Measure the overall diameter of your mounted tire from ground to top of tread -- should fall between 40 and 42 inches.
  • Common bus and large Class A tire sizes that fall in this range include 295/80R22.5, 315/80R22.5, and similar commercial truck profiles.
  • If your tire measures under 40 inches, look at ADCO's smaller Tyre Gard sizes (36-39 inch range).
  • The cover is designed to slide over the tire and wheel assembly while the rig is parked on level ground.
Application Note: These covers are intended for stationary storage and parking use only. Remove all tire covers before moving the vehicle. Driving with covers installed will destroy the cover and may create a road hazard.

Installation Tips

  • Clean and dry the tire sidewall before installing -- trapped moisture under the cover can promote mildew on the flannel backing over long storage periods.
  • Slide the cover over the tire with the open face toward the wheel. The flannel side contacts the tire.
  • Pull the rear bungee cord through the grommets and secure the bungee balls to hold the cover firmly in place.
  • For added security in windy climates, some owners run a secondary strap through the lug nut area to prevent the cover from rotating.
Maintenance: Rinse covers with fresh water at the start of each storage season and allow to air dry completely before re-installing. Inspect grommets annually -- brass reinforcement resists corrosion but grommets can loosen over time with heavy use.

Warranty

ADCO backs the Ultra Tyre Gard with a limited 3-year manufacturer warranty against defects in materials and workmanship. Retain your purchase receipt for warranty claims.

Product Specifications

ManufacturerADCO Products
Part Number3977
Vendor Part Number01-1185
UPC723111039775
ColorBlack
Quantity Per Order2 covers (one pair)
Weight (per pair)3.53 lbs
WarrantyLimited 3-year manufacturer warranty

Fitment

Tire Diameter Range40 to 42 inches (overall diameter)
Application TypeBus size -- large Class A motorhome, converted coach
Wheel TypeStandard disc wheel (fits over tire and wheel assembly)

Materials and Construction

Outer Shell MaterialHeavy-duty vinyl
Inner LiningSoft flannel backing
Seam ConstructionOverlapping seams, double-needle stitching
Fastening SystemBungee-ball rear closure
Grommet MaterialBrass-reinforced grommets

Protection Capabilities

UV ProtectionYes -- blocks solar UV radiation
Liquid RepellentYes -- vinyl outer shell sheds rain and road spray
Ozone ProtectionYes -- shields sidewalls from ambient ozone exposure
Wind ResistanceBungee-ball closure prevents blow-off in moderate winds

What's Included

Covers Included2 tire covers
Fasteners IncludedBungee-ball closure system (attached to each cover)
Important Information
  • Remove all tire covers BEFORE moving the vehicle. Never drive with covers installed -- this creates a serious road hazard and will destroy the covers.
  • Confirm your tire's overall diameter falls within 40-42 inches before ordering. Measure the mounted tire, not the tire sidewall markings alone.
  • This listing is for one pair (2 covers). A standard four-tire rear tandem axle requires two pairs (4 covers total).
  • Not intended for use on moving vehicles, temporary road stops, or as a permanent protective solution while driving.
  • Store covers in a cool, dry location when not in use to maximize service life of the vinyl and stitching.


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