If it is well balanced with braking now leave it alone. In a snow storm you want to keep the speed down anyway. You also take it easy on the brake. I pull regular a 4 ton tandem in snowy conditions. I only adjust according to my load conditions not weather
2014 Ram 1500 CrewCab 4x4 5.7 Hemi 3.92 Rear and Air Lift 1000
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ALJO 'Forever Young @ Heart' provide on their travels Music Entertainment to Senior Care Homes