Uploaded September 2024 | Updated September 2026, 2 hours ago

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I talked to Martins and confirmed that the the OPS is for over pressurization.
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They said some heavy truck tire installers like to over pressurize the tires when mounting them on wheels. This setting will do that and then bring the pressure back down to your desired pressure.

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MW-60 MW-60-4WAY MW-64HP