- Best for parked trailers: ADCO Tyre Gard Double Axle, one piece over both tandem tires, 30 to 32 inch.
- Spare tire covers come in letter sizes by diameter: J (27"), E (29 3/4"), C (31 1/4"), B (32 1/4").
- White Polar White vinyl suits sun-heavy regions; black blends with dark rigs.
- Measure the full diameter of the tire, rim and rubber included.
Best overallADCO 3922 White Double Axle Tyre Gard Wheel Cover
Best for small sparesADCO 1757 Polar White Vinyl Tire Cover J (Fits 27" Diameter Wheel)
Best mid-size whiteADCO 1754 Polar White Vinyl Spare Tire Cover E (Fits 29 ¾" Diameter Wheel)
Best black spare coverADCO 1733 Black Vinyl Spare Tire Cover C (Fits 31 1/4" Diameter Wheel)The best RV tire covers stop the slow damage a parked rig suffers while it sits: UV breaking down the rubber until the sidewalls crack. RV tires often age out long before the tread wears, and a rig parked in one spot keeps the same side of each tire facing the sun all season.
ADCO makes two kinds of tire protection: the Tyre Gard, which wraps the wheels on the axle, and fitted vinyl covers for a rear-mounted spare. Here are five, sized and compared from their listings.
Our picks
ADCO 3922 White Double Axle Tyre Gard Wheel Cover
The Large Double Axle Tyre Gard covers both tires of a tandem axle in one piece and fits 30 to 32 inch tires. It uses heavy-duty flannel-backed vinyl that repels liquid and blocks the sun's UV. ADCO says it helps prevent the premature sidewall cracking that can lead to on-road blowouts. Overlapping seams, double-needle stitching and reinforced grommets add durability.
- One cover for two wheels
- Flannel backing against the rubber
- Reinforced grommets and double stitching
- Only one size range here
ADCO 1757 Polar White Vinyl Tire Cover J (Fits 27" Diameter Wheel)
The 1757 is a Polar White vinyl spare tire cover in size J, for a 27-inch diameter tire. ADCO says it protects against damage from UV rays and bird droppings. Heavy-duty vinyl with a hollow bead welt cord gives it a crisp edge. An elasticized back makes it easy to fit.
- Elasticized back
- Bright white reflects heat
- Welt cord edge
- White shows road grime
ADCO 1754 Polar White Vinyl Spare Tire Cover E (Fits 29 ¾" Diameter Wheel)
The 1754 is size E, for a 29 3/4 inch diameter spare. It uses the same heavy-duty vinyl, welt cord and elasticized back as the rest of the line. The Polar White finish matches many white-sided trailers. The listing calls out protection from UV and bird droppings.
- Common mid-range size
- Matches white rigs
- Easy elastic fit
- Size is specific; measure first
ADCO 1733 Black Vinyl Spare Tire Cover C (Fits 31 1/4" Diameter Wheel)
The 1733 is a black vinyl cover in size C, for a 31 1/4 inch diameter tire. It protects against UV rays and bird droppings, per the listing. It has the same welt cord and elasticized back as ADCO's white covers. Black suits dark-trimmed rigs and hides road film.
- Black hides grime
- Heavy-duty vinyl
- Elasticized back
- Black absorbs more heat
ADCO 1732 Black Vinyl Spare Tire Cover B (Fits 32 1/4" Diameter Wheel)
The 1732 is size B, the largest spare cover here, fitting a 32 1/4 inch diameter including rim and rubber. It secures with an elastic inside hem, and the listing says one cover is included. It shields the tire from UV and bird droppings. A hollow bead welt cord finishes the edge.
- Largest diameter in the group
- Elastic inside hem
- Clear sizing note on the listing
- Black only in this size here
Why RV tires need covers
RV tires rarely wear out from mileage. Sidewall cracking comes from UV, ozone and time, and a parked rig gives the sun months to work on the same patch of rubber.
Body covers stop at the hem, so the tires stay exposed even when the rest of the rig is wrapped. See our travel trailer cover picks for the rest of the job.
Which size are the best RV tire covers for your rig?
ADCO sizes spare covers by letter, and each letter matches a diameter. Here is how they compare.
Tire diameter each cover fits
From ADCO listings, inches
| Cover | Type | Fits | Color | Backing / fit |
|---|---|---|---|---|
| Tyre Gard 3922 | Double axle wheel | 30"-32" tires | Polar White | ✓ Flannel-backed, grommets |
| 1757 size J | Spare | 27" diameter | Polar White | ✓ Elasticized back |
| 1754 size E | Spare | 29 3/4" diameter | Polar White | ✓ Elasticized back |
| 1733 size C | Spare | 31 1/4" diameter | Black | ✓ Elasticized back |
| 1732 size B | Spare | 32 1/4" diameter | Black | ✓ Elastic inside hem |
How to measure and choose
- Measure straight across the tire, from the ground to the top of the tread, rubber and rim included.
- Pick the letter size closest to that number, never a size smaller.
- For tandem axles, measure one tire and choose a double-axle Tyre Gard that covers that range.
- Choose color: white reflects more heat; black hides dirt.
Tyre Gard or spare cover?
A Tyre Gard drapes over the wheels while the rig is parked and comes off before you drive. A spare cover stays on the rear-mounted spare all the time, including on the road.
Top tire cover picks
ADCO 3922 White Double Axle Tyre Gard Wheel Cover
Check price →ADCO 1754 Polar White Vinyl Spare Tire Cover E (Fits 29 ¾" Diameter Wheel)
Check price →ADCO 1732 Black Vinyl Spare Tire Cover B (Fits 32 1/4" Diameter Wheel)
Check price →Storing for the season? Pair a tire cover with one of our winter RV covers, or browse full-length options in the travel trailer covers catalog. Motorhome owners can see our Class C cover picks.
How we picked
We included every ADCO tire cover in our catalog whose listing states a clear fit, then picked one per diameter so most owners will find their size. The Tyre Gard leads because it protects two load-bearing tires at once, while spare covers protect one tire you hope never to use.
Details on materials, closures and colors come straight from the listings. We did not use prices, ratings or review counts.
FAQ
What are the best RV tire covers for a tandem-axle trailer?
A double-axle cover such as ADCO's Tyre Gard 3922, which covers both tires in one piece and fits 30 to 32 inch tires, according to the listing.
Do tire covers really prevent cracking?
They block UV, which is the main cause of sidewall cracking on parked rigs. ADCO says the Tyre Gard helps prevent premature sidewall cracking.
How do I know my spare tire cover size?
Measure the full diameter including rim and rubber, then match it to the letter size. ADCO's size B, for example, fits 32 1/4 inches.
White or black tire covers?
White reflects more sunlight and stays cooler; black hides dirt. In hot climates, white is the practical pick.
Can I drive with a Tyre Gard on?
No. Wheel covers like the Tyre Gard are for a parked rig. Remove them before you move the trailer.