Load Range E is a strength and capacity rating for trailer (ST) tires. It indicates the tire is built to carry heavier loads compared with lower ranges (like C or D) when inflated to its specified cold pressure.

• It’s often listed alongside the size (e.g., ST205/75R15) and a load index such as 117/112 on the sidewall or product page.
• Many E‑range trailer tires are marketed as 10‑ply rating, which refers to a strength class rather than the tire’s actual number of plies.
• For the best fit, match the load range, size, and load index to your trailer’s placard or owner’s manual.

On Walmart.com, you can filter by size and load range to narrow options.

Start with your trailer’s placard or owner’s manual. It lists the recommended size, load range, and load index for safe operation.

• Load Range E generally provides a higher load-carrying capacity than D, which can be helpful for heavier cargo or multi-axle trailers.
• Higher load ranges can have stiffer constructions, which may feel firmer when lightly loaded. The right choice depends on your typical payload.
• Always confirm your wheels/rims are rated for the tire’s load and inflation requirements.
• Compare the load index numbers (e.g., 117/112 vs. lower values) on the tire listings to understand capacity differences.

If your loads approach the trailer’s limits, stepping up to E can be considered, but follow manufacturer guidance.

Many trailer tires labeled Load Range E are marketed as 10‑ply rating, but that term is a legacy strength class, not a literal ply count.

• Modern radial trailer tires often use fewer actual plies with advanced materials while meeting the 10‑ply rating performance.
• Capacity is better understood through the tire’s load index (e.g., 117/112) and the listed maximum load on the product page or sidewall.
• When comparing options, match the size (like ST225/75R15), load range, and load index to your trailer’s requirements.

In short, use the load index and specifications to gauge real capacity, and view “10‑ply rating” as a category indicator rather than construction details.

“14‑ply rating” typically signifies a higher strength class than Load Range E (commonly associated with a 10‑ply rating). They’re different categories used to describe a tire’s load and inflation capability.

• Rather than relying on ply rating alone, compare the tire’s load index (e.g., 117/112) and maximum load listed on the product page.
• Choose the rating that aligns with your trailer’s axle and GVWR requirements; going higher than needed isn’t always beneficial and may affect ride firmness.
• Ensure your wheels/rims and valves are also rated for the tire’s specifications.

When in doubt, follow the trailer manufacturer’s recommended size, load range, and load index as your primary reference.

For capacity and durability, use the tire’s cold inflation pressure shown on the sidewall to achieve its published load rating, unless your trailer manufacturer specifies otherwise.

• Check pressures when tires are cool and before trips; heat and usage can change readings.
• Match inflation to the load you carry only within manufacturer guidance. Underinflation can increase heat buildup, while overinflation can affect ride and wear.
• Verify your wheels/rims and valve stems are rated for the tire’s pressure and load.
• Recheck after the first few miles of towing and periodically during long hauls.

Consult the tire’s product page for its load index and specs, and follow the trailer placard recommendations.