DEMETER Set 4 Radial Trailer Tires Review
DEMETER DT13 ST205/75R15 Trailer Tire Set of 4 Review
Replacing trailer tires can get confusing because the size, load range, pressure rating, wheel fit, and trailer-only marking all matter. The DEMETER DT13 ST205/75R15 set gives you four matching radial trailer tires with Load Range D support, 8-ply construction, and a listed 2,040 lb load capacity per tire. This review helps you decide whether this tire-only set fits your trailer, or whether you should skip it for a mounted wheel assembly, a different size, or a higher load range.
Quick Verdict
Rating: 8/10, recommended with caveats
Best For: Trailer owners who need a full set of ST205/75R15 Load Range D tires and already have compatible 15-inch trailer wheels.
Bottom Line: The DEMETER DT13 set is a practical option if your trailer calls for this exact size, load range, and pressure rating. The main tradeoff is that this is a tire-only package, so you still need compatible rims, proper valve stems, and professional mounting.
[Products Worth Considering]
Mount your spare tire directly to the inside wall of an enclosed trailer or garage to save space and keep your tire secure. This wall-mount spare tire carrier is designed for universal trailer tire fit and includes a fixed plate and chute for convenient screw replacement. Nylon insert hex lock nuts help prevent the tire from falling off, and wing hardware enables faster load and unload during maintenance.
This universal spare tire mount carrier holder is built for utility trailers and boat trailers, offering a secure fit for 4, 5, and 6 lug wheels. It supports multiple bolt pattern sizes and a heavy-duty load capacity while resisting rust with a durable finish. The design allows easy installation and lets you choose the steel beam height for a better fit.
This universal spare tire mount fits 4, 5, and 6 lug trailer wheels with bolt patterns from 4" to 5.5" and helps keep your tire securely locked in place. Its reinforced triangular structure with a sturdy behind plate is designed to handle up to 150 lbs, making it suitable for boat, camper, and RV spare tire mounting. The angled raised design reduces wind resistance and installation is straightforward with different length bolts and no drilling required.
Key Specs
| Specification | Detail |
|---|---|
| Brand | DEMETER |
| Model / Style | DT13 / ST205/75R15 107/102M |
| Product Type | Special trailer radial tire |
| Set Size | Set of 4 tires |
| Tire Size | ST205/75R15 |
| Rim Size | 15 inches |
| Section Width | 205 mm |
| Aspect Ratio | 75 |
| Load Range | D |
| Ply Rating | 8-ply rated |
| Listed Load Capacity | 2,040 lb |
| Maximum Pressure | 65 PSI |
| Speed Rating | M |
| Construction | Radial |
| Tread Type | Symmetrical five-rib tread |
| Rims Included | No |
| Valve Stems Included | Not clearly listed |
| Best Use | Utility trailers, enclosed cargo trailers, small equipment trailers, and compatible boat trailers |
| Safety Note | Trailer use only. Not for passenger cars, SUVs, or light trucks. |
Before You Buy: Do not choose trailer tires by size alone. Confirm ST205/75R15, Load Range D, 65 PSI compatibility, rim size, valve stem rating, trailer placard details, and axle rating before you order.
What Is the DEMETER DT13 ST205/75R15?
The DEMETER DT13 is a special trailer radial tire sold here as a four-tire ST205/75R15 Load Range D set. It is designed for trailer use, not for passenger cars or light trucks. The listing describes an 8-ply rated radial build, a 65 PSI maximum pressure, a 2,040 lb listed load capacity, and a symmetrical five-rib tread.
This is a tire-only package. Rims are not included, so you need compatible 15-inch trailer wheels before installation. You should also ask your tire shop to check the valve stems, wheel condition, and pressure rating before mounting the tires.
The main value is consistency. Replacing all four trailer tires with the same model, size, load range, and tread pattern helps avoid mixed tire behavior from corner to corner, as long as the size and load rating match your trailer requirements.
Who Should Buy It?
Best For
- Trailer owners replacing four ST205/75R15 tires at the same time
- Utility, cargo, small equipment, or boat trailers that require Load Range D support
- Buyers who already have compatible 15-inch trailer rims
Skip If
- Your trailer placard calls for a different tire size, wheel diameter, or load range
- You need a mounted tire-and-wheel assembly instead of tires only
- You need tires for a passenger vehicle, SUV, pickup, or non-trailer use
Fit and Compatibility
The most important fit detail is the ST205/75R15 size. The “ST” marking means special trailer use, while the 205 mm section width, 75 aspect ratio, and 15-inch rim size need to match your trailer setup. If your trailer currently uses a different size, do not assume this tire is a safe substitute without checking the trailer manufacturer’s guidance.
Load Range D and the listed 2,040 lb load capacity matter because trailer tires carry constant vertical load and can be stressed by heat, underinflation, and overloading. Match the tire load rating to your trailer’s gross vehicle weight rating, axle rating, and real loaded weight. Leave a safety margin instead of buying at the limit.
Load, Pressure, and Towing Use
The DEMETER DT13 listing shows a 65 PSI maximum pressure. Trailer tires often need to be inflated to the pressure shown on the sidewall to carry their rated load, but you should also follow your trailer placard and owner guidance. Always check pressure when the tires are cold.
Underinflation can create heat, uneven wear, and poor tracking. Overloading can shorten tire life and raise the chance of damage. For safer towing, inspect the sidewalls before each trip, look for cracks or bulges, and replace tires that show exposed cord or age-related damage.
Pro Tip: Before mounting, ask the installer to confirm that your valve stems are rated for 65 PSI and that your rims are suitable for ST205/75R15 Load Range D trailer tires.
Tread Design and Road Manners
The five-rib symmetrical tread is meant to create an even contact patch on paved roads. This type of layout can help the trailer track more predictably when the tires are inflated correctly and the trailer is loaded within its limits.
Because this is a trailer tire, the goal is stability, load support, and heat control rather than sharp steering feel. It is not built to replace a passenger-car tire. Use it only on compatible trailers and avoid mixing it with different tire sizes or different load ranges on the same axle.
Installation and Setup Notes
These tires do not come mounted on rims. Plan for professional mounting, balancing if your installer recommends it, and new valve stems if your current stems are old, cracked, or not rated for the tire pressure. You should also check that the wheel is not bent, corroded, or damaged around the bead seat.
After installation, recheck pressure before your first loaded trip. Watch for vibration, uneven wear, rubbing, or heat after a short test drive. If your trailer has been sitting for a long time, inspect suspension parts, bearings, and alignment as part of the same tire service.
[Products Worth Considering]
Secure a full-size spare on your trailer with this powder-coated steel spare tire mount bracket. It fits most 4-, 5-, and 6-lug wheel bolt patterns and mounts to trailer tongues up to 4 in wide and 5 in tall. Built for reliable carry with a max 150 lb load rating and includes zinc-plated hardware for straightforward installation.
Keep RV, trailer, or truck dual-axle tires protected with waterproof, UV-resistant covers that help guard against sunlight, snow, rust, and dirt. The dual tire covers are easy to install with a rope/bungee fastener for a stable fit that won’t easily slip. Designed for 27–30 inch diameter wheels, they help maintain tire condition through harsh weather.
How It Performs in Real Use
For Utility Trailers
For a utility trailer that calls for ST205/75R15 Load Range D tires, this set gives you four matching tires with the same tread design and rating. That helps keep the trailer more consistent when hauling tools, yard equipment, building supplies, or other balanced loads.
For Enclosed Cargo Trailers
Enclosed trailers can carry steady weight and may run for long highway stretches. The radial construction and 65 PSI rating make this set worth considering when your cargo trailer placard matches the tire size and load range. Check loaded weight carefully because enclosed trailers can become overloaded before they look overloaded.
For Boat Trailers
The DT13 may work for a boat trailer if the size, load range, and capacity match the trailer’s requirements. If you launch in wet or salty areas, inspect sidewalls, rims, and valve stems often. Salt, moisture, and long outdoor storage can age trailer tire and wheel components faster.
For Seasonal or Backup Trailer Use
If your trailer sits for long periods, tire age and storage matter as much as tread depth. Keep the tires properly inflated, protect them from long sun exposure when possible, and inspect them before every trip. Replace tires that show cracking, flat-spot damage, bulges, or other visible issues.
Common Mistakes to Avoid
Do not buy this set only because the tire diameter looks close to your current tire. Trailer tires need the right size, load range, pressure rating, rim diameter, and clearance. A wrong match can affect load capacity, fender clearance, and towing stability.
Do not install these on passenger vehicles. The DT13 is listed for trailer use only. Passenger vehicles have different handling, braking, and ride requirements, so trailer-only tires are not a safe replacement for car, SUV, or light truck tires.
Do not reuse old valve stems without inspection. A tire rated for 65 PSI needs valve stems and wheels that can safely support that pressure. This is a small part, but it can become a major problem if overlooked.
Pros and Cons
Pros
- ST205/75R15 Load Range D sizing fits many compatible trailer setups
- Set of 4 helps you replace all trailer tires with matching size and tread
- 8-ply rated radial construction is built for trailer use
- 65 PSI maximum pressure supports the listed trailer tire load rating
- Five-rib symmetrical tread is a practical highway-style trailer tread design
Cons
- Tires only, with no rims included
- Not suitable for passenger cars, SUVs, light trucks, or non-trailer use
- Valve stems are not clearly listed as included
- Warranty, date code, and seller terms should be confirmed on the current Amazon listing
Is It Worth the Price?
The DEMETER DT13 set is worth considering if you need four matching ST205/75R15 Load Range D trailer tires and already have rims. Its value comes from a complete four-tire replacement, radial trailer construction, an 8-ply rating, and the listed 2,040 lb load capacity.
It is less useful if you only need one spare, need a mounted tire-and-wheel assembly, or need a higher load range. You should also check the current Amazon listing, seller terms, tire date codes, and return policy before ordering.
For the right trailer, this can be a smart buy for routine utility, cargo, small equipment, or boat trailer use. For heavier commercial hauling or uncertain fitment, confirm your specs with a tire professional before buying.
How It Compares to Alternatives
Similar ST205/75R15 Load Range D trailer tire options include Free Country ST205/75R15, ROCKMAN ST205/75R15, and Trailer King RST ST205/75R15 tires. Compare load range, speed rating, tread depth, rim requirements, warranty terms, and whether the tire is sold alone or already mounted on a wheel.
The DEMETER DT13 set makes the most sense if you want a four-tire package with matching tread and article-listed Load Range D specs. Another option may be better if you need a single spare, a different speed rating, a mounted wheel assembly, or a brand with more easily confirmed warranty support.
Frequently Asked Questions
Do the DEMETER DT13 ST205/75R15 tires come mounted on rims?
No. This listing describes tires only. You need compatible 15-inch trailer rims before the tires can be mounted.
Can I use these tires on a utility trailer?
Yes, if your utility trailer is rated for ST205/75R15 Load Range D tires and the load rating is enough for the trailer plus cargo. Check the trailer placard and axle rating before buying.
Are these tires suitable for boat trailers?
They may be suitable if your boat trailer requires ST205/75R15 Load Range D tires and the loaded weight fits within the tire and axle ratings. For wet launches, inspect sidewalls, rims, and valve stems often.
What pressure should I run?
The listing shows a 65 PSI maximum pressure. Trailer tires often need the sidewall pressure to carry their rated load, but you should also follow your trailer manufacturer’s pressure guidance.
What does Load Range D mean for this tire?
Load Range D tells you the tire is built for a higher trailer load than lighter-duty trailer tire ranges. For this listing, the article-supported details show 8-ply rating, 65 PSI maximum pressure, and a 2,040 lb listed load capacity.
Can I use these on a car, SUV, or pickup?
No. The DT13 is listed for trailer use only. Do not use trailer-only tires on passenger vehicles, SUVs, or light trucks.
Are valve stems included with the set?
Valve stems are not clearly listed as included. Ask your installer to use valve stems rated for the tire pressure and rim type.
Is there a warranty?
The accessible listing text in the source mentions a 2-year limited warranty. Because seller terms can change, confirm the warranty details on the exact Amazon listing before buying.
The Bottom Line
The DEMETER DT13 ST205/75R15 set of 4 is a practical choice if your trailer requires Load Range D radial trailer tires in this exact size and you already have compatible 15-inch rims. Its main strengths are the full four-tire package, 8-ply rated construction, 65 PSI maximum pressure, and trailer-only design. Skip it if you need rims included, a different load range, a different size, or tires for a passenger vehicle.
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