What types of tires does SiamTread manufacture?

General Rubber Thailand manufactures semi truck tires (TBR), light truck tires (LT), commercial truck tires, agricultural tires, OTR (off-the-road/mining) tires, all-terrain truck tires, and PCR (passenger car radial) tires. All categories are available for wholesale export from our factory in Rayong, Thailand.

Are SiamTread tires DOT certified for the US market?

Yes. All our semi truck tires, light truck tires, and PCR tires carry US DOT certification. Our facility is also ISO 9001:2015 and ISO 14001:2015 certified.

What is the minimum order quantity for wholesale tire orders?

Our standard minimum order is one 20-foot container. Depending on tire size, a 20ft container holds approximately 250–1,000 tires. Mixed-size containers are available for new customers testing multiple product lines.

What is General Rubber Thai?

General Rubber Thai helps you organize, track, and share your work in 1 unified workspace. Built for teams and solo users who want clarity and speed.

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OTR / Mining Tires

OTR Tires for Mining & Construction

Name: 295/75R22.5 Semi Truck Tire
Brand: General Rubber (Vietnam)
Availability: InStock

Wholesale OTR (Off-The-Road) tires for mining, quarry, and construction equipment. E-3/L-3, E-4, and L-5 tread patterns. 25" to 35" rim sizes. Factory-direct from Thailand with full technical support.

E-3 / E-4 / L-5

Tread Patterns

28PR – 48PR

Ply Rating

25" – 35"

Rim Sizes

Mining Grade

Construction

OTR Tires Built for Extreme Conditions

General Rubber Thailand's OTR tire range is engineered for the harshest operating environments: open-cut mines, limestone quarries, port terminals, and large-scale civil construction projects. Our OTR tires are constructed on a multi-ply steel-cord casing with a thick tread gauge engineered to resist cuts, gouges, and heat buildup during sustained heavy load cycling on rough haul roads.

Tread Pattern Options

We offer three primary OTR tread designs to match specific site conditions. E-3/L-3 (Rock/Lug) provides balanced traction and wear for general earthmoving applications. E-4 (Rock) offers enhanced cut resistance for rocky haul roads with sharp aggregate. L-5 (Deep Tread) delivers maximum tread depth for the longest service life in abrasive quarry conditions. Our technical team can recommend the optimal pattern based on your site's specific haul road profile and operating conditions.

Applications in Mining & Construction

Our 25" and 35" rim fitments cover the full range of off-highway equipment: articulated dump trucks, rigid mining haul trucks (up to 100-ton class), motor graders, wheel loaders, and scrapers. These sizes are particularly popular in the Australian iron ore and coal mining sectors, as well as African copper and gold mining operations.

Key Features & Benefits

Extra-deep tread gauge (E-4, L-5 patterns)

Multi-ply steel-cord casing for maximum strength

Heat-resistant compound for long haul roads

E-3/L-3, E-4, L-5 patterns available

Fits major haul truck brands (Cat, Komatsu, Hitachi)

28PR to 48PR ply ratings available

Quarry and mine-specific compound options

Full TKPH (Tonne Kilometre Per Hour) ratings provided

Applications & Markets

Open-Cut MiningUnderground MiningLimestone QuarriesArticulated Dump TrucksRigid Haul TrucksWheel LoadersMotor GradersScrapersPort TerminalsRoad ConstructionDam ConstructionPipeline Construction