Mining and On/Off-Road Truck Tires: What Changes in the Casing and Tread

13 November 2026 · Tires

A highway tire taken onto a haul road fails from the inside out. Rock cuts a sidewall, impact breaks a belt, and heat finishes the casing. Mining and on/off-road tires are built differently for those three failure modes, and the difference is visible in the tread depth, the shoulder and the casing weight.

Three service classes, not two

What changes in the mining casing

• Deeper tread — more rubber before the casing is exposed to rock.
• Stronger sidewall and shoulder — the shoulder takes the first impact on a haul road.
• Cut and chip resistant compound — highway compounds crack under repeated impact.
• Higher ply rating — 20PR and above for heavy axle loads.

Mining patterns in this catalogue

On/off-road patterns

Construction and mixed-service trucks need traction on unpaved ground without destroying themselves on the highway leg. Block depth sits between highway drive and mining: enough bite for a site, enough rib stability for the return trip.

Practical rules for haul-road fleets

1. Do not run highway patterns on haul roads to save cost; the casing failure rate is higher than the saving.
2. Check inflation weekly, not monthly. Under-inflation kills mining casings faster than rock.
3. Rotate between positions to even out shoulder damage.
4. Match the load index to the actual loaded axle weight, not the nominal truck rating.
5. Keep a casing record: impact damage is often visible before it becomes a roadside failure.

What we need to quote

Send the size, the required load index, the surface type and the axle position. If the site has a history of sidewall cuts, say so — it changes the pattern recommendation more than the price does.

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