New haul truck tyres launched

Michelin Earthmover has unveiled its latest surface mining haul truck tyres, the MICHELIN XDR3 MB4.

In development testing for the last six years, the new tyre — developed for 363 tonne plus trucks – is designed with new compounds and a new tread pattern that provides increased tyre life, by a minimum of 10 per cent without any compromise on TKPH.

The use of corrosion-isolating cables incorporated into the tyre architecture results in a 10 per cent increase in tyre endurance, a significant advantage for these trucks, which are typically operated for up to 23 hours per day in harsh terrain.

The MICHELIN XDR3 — Michelin’s largest-selling tyre globally — is designed for operator safety. Michelin’s tread pattern provides load distribution across the contact patch and is designed to lower contact pressure and reduce wear rate.

Additionally, the tread pattern is designed for better endurance, due to its heat dissipation capabilities; this prevents overheating, which can result in tyre failure, and, in turn, leads to operator safety risks.

“Michelin’s most popular tyre, tested on all truck brands, is designed for punishing environments such as oil sands and other surface-mining operations where safety and performance is the goal,” Jamey Fish, director of Earthmover Marketing for Michelin North America, said.

The XDR3 — available in the 40.00R57 size — is MEMS-ready and reduces rim slip due to a new flat bead wire, which strengthens the clamping force on the wheel and increases its contact surface with the rim.

The non-directional tyre also benefits from more solid-steel cables, increased metal mass, thicker sidewalls and a new steel belt that offers increased protection against punctures in the tread area.

It has a load capacity of nearly 32 tonnes due to its cable-reinforced carcass.

The shoulder design helps the tyre cool more quickly, while the central zone and its large, beefy lugs are cut-resistant to improve both durability and traction capability.

Wide grooves and channels provide traction and grip on graded and loose ground conditions. The MICHELIN XDR3 will replace the MICHELIN XDR2 line over the next several years.

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