Driven by Technology, Built for Heavy Loads – The Progress of SUNDOM Radial OTR Tires

In extreme working conditions such as mining, large‑scale infrastructure projects, port logistics, and quarries, OTR (off-the-road) tires serve as the “feet” of heavy machinery. Their performance directly affects equipment availability, operating costs, and site safety. Compared with traditional bias OTR tires, radial OTR tires – with their steel belt‑reinforced carcass construction – offer superior load‑carrying capacity, wear resistance, puncture resistance, and lower heat generation. They have become the mainstream choice for heavy‑duty machinery. Following the global trend toward radialization, SUNDOM has steadily advanced in the radial OTR tire segment through solid manufacturing expertise and rigorous quality control, delivering professional, cost‑effective tire solutions to users worldwide.

Quality Foundation, Value‑Driven

Mine and construction site roads are mostly unpaved, littered with sharp stones, steep slopes, and uneven surfaces. In such environments, a tire failure can cause far greater losses in downtime and replacement costs than the tire’s own price. SUNDOM fully understands this and adheres to a “quality‑first” development philosophy: all‑steel carcass construction for enhanced load capacity; specially formulated compounds for cut and puncture resistance; and optimized profile design for improved pressure distribution. SUNDOM pursues genuine whole‑life value – helping customers reduce cost per tonne‑kilometer through reliable quality, never sacrificing safety for short‑term price advantages.

Global Reach, Deep Roots in Heavy Industry Markets

 Thanks to its consistent product quality, SUNDOM radial OTR tires have successfully entered multiple overseas markets. In Southeast Asia, mining and infrastructure development drive strong demand for loader and rigid dump truck tires. In Africa, the extremely harsh road conditions in mining areas demand exceptional puncture and cut resistance. In the Middle East, high temperatures and abrasive rock surfaces test heat resistance and wear performance. In South America, large‑scale mining operations also require high‑performance radial OTR tires. With in‑depth understanding of local working conditions, SUNDOM continues to provide reliable tire solutions for heavy‑industry users around the world.

Comprehensive Size Range

Heavy machinery comes in many models and operates under diverse conditions. SUNDOM offers a broad portfolio of radial OTR tire sizes to match loaders, articulated dump trucks, graders, rollers, and more. Common sizes include, but are not limited to:

· 17.5R25, 20.5R25 – suitable for medium‑sized loaders and articulated dump trucks

· 23.5R25, 26.5R25 – mainstream sizes for loaders and heavy dump trucks

· 29.5R25 – popular size for large loaders and heavy dump trucks

· 18.00R25 – common size for heavy mining dump trucks and large loaders

· 16.00R25 – classic size for port straddle carriers and large construction machinery

These sizes cover most heavy equipment needs, from mining to port logistics, construction to quarrying, and can be precisely matched to specific vehicle models and operating conditions.

Professional Tread Pattern Portfolio

Working conditions vary widely – from hard, sharp rock surfaces to soft soil slopes, from wet underground tunnels to dry gravel yards – each demanding different tread designs. SUNDOM offers a range of professional patterns tailored to specific applications:

· E‑3/L‑3 (Standard Traction) – Block‑type, non‑directional deep tread providing balanced traction and handling, suitable for general mining and construction site loader and haulage operations.

· E‑4/L‑4 (Deep Rock Pattern) – Deep‑groove block design, with tread depth approximately 50% greater than E‑3/L‑3, offering excellent cut resistance and traction in severe conditions such as quarries and hard rock surfaces.

· L‑5 (Extra‑Deep Pattern) – Ultra‑deep tread with specially formulated compounds; the massive, aggressive tread delivers a perfect balance of traction, flotation, and damage resistance. Specifically engineered for loaders and dozers operating in the harshest mining and quarry environments.

· E‑7 (Flotation Pattern) – Wide, shallow tread design that increases footprint to reduce ground pressure, ideal for machinery operating on soft terrain.

This diverse pattern portfolio ensures that heavy equipment operating under various conditions can find the most suitable tire solution.

As radialization accelerates in the global OTR tire market, SUNDOM chooses to stand on technical excellence and reliable quality. From the busy mining areas of Southeast Asia to the remote quarries of Africa, from the scorching construction sites of the Middle East to the vast mines of South America, SUNDOM radial OTR tires are carrying the trust and heavy loads of industrial users worldwide with solid performance and dependable reliability.