Radial Trailer Tire On Rim ST145R12 ST145/R12 Load Range D - Durable

In this review the eCustomrim 2-Pack Radial Trailer Tire On Rim is assessed for trailer owners who need a reliable, ready-to-mount tire and wheel assembly. The bottom line: this set is best for light trailer and utility users who want a DOT approved assembly with a six year warranty and roadside assistance; the most compelling reason to buy is the combination of a rugged, extra-thick sidewall with a full nylon overlay and steel belts that aim to resist damage and stabilize heavy loads.

Key Features

• DOT approved assembly: The tire, wheel and valve stem are DOT approved, meaning the assembly meets required safety standards for road use.
• Load capacity: With a maximum load of 1220# and Load Range D, these assemblies support heavier payloads common to utility and small cargo trailers.
• Durable construction: Steel belts and a full nylon overlay cap provide added structural integrity and stability under heavy loads.
• Scuff guard sidewall: The proprietary scuff guard and extra thick rubber on the outside sidewall protect against curb and road damage where tires typically take the most abuse.
• Tread and efficiency: The 8/32" tread depth is balanced for trailer stability, tread longevity and improved rolling efficiency.
• Warranty and support: A full six year warranty plus free roadside assistance adds long-term peace of mind for trailer owners.

Who It's For

This assembly is aimed at owners of small utility trailers, boat trailers and enclosed cargo trailers who need a complete tire and rim ready to mount, and who value durability and a strong warranty. It suits buyers who prefer a heavier duty Load Range D tire for better load distribution and heat management on longer hauls.

Those who should look elsewhere include users who need specialty tires (off-road, high-speed passenger car tires) or nonstandard rim sizes; also buyers who need an ultra-lightweight option for weight-sensitive applications may prefer a different construction.

Pros & Cons

Pros

• Durable sidewall design with extra thick rubber and a scuff guard helps protect from curb damage on the exterior tire face.
• High load rating (1220#) and Load Range D make these suitable for heavier trailer loads and towing stability.
• DOT approved tire, wheel and valve stem plus six year warranty and free roadside assistance increase confidence in long-term ownership.
• Construction with steel belts and a nylon overlay improves stability and helps with heat dissipation under load.

Cons

• Only one rim size is offered here (12x4.5"), so buyers needing alternate rim dimensions must search for other options.

Specifications

Tire Size	ST145R12 / ST145/R12
Maximum Load	1220#
Maximum Pressure	65 PSI
Overall Diameter	21.5 in
Load Range	D
Rim Dimensions	12x4.5 in
Bolt Configuration	5 lug on 4.5 in center, center bore 3.19 in

Our Verdict

The eCustomrim 2-pack delivers a strong value for trailer owners who want a ready-to-install, DOT approved tire and rim assembly with a focus on durability. Its reinforced construction, scuff guard and six year warranty make it a practical choice for utility and cargo trailers where damage resistance and load capacity matter most.

Frequently Asked Questions

Are these tires ready to mount on the trailer?
Yes, each item is a complete tire and rim assembly including the valve stem, ready for mounting to compatible hubs.

What is the bolt pattern and center bore?
The assemblies use a 5 lug on 4.5 in center bolt pattern with a 3.19 in center bore; refer to fitment diagrams for exact application.

What warranty and support are included?
Each assembly includes a full six year warranty and free roadside assistance for covered issues during the warranty period.