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drive axle ratio

Drive-Axle Ratios for Medium-Duty Trucks

Typically when specifying out medium-duty trucks and vans for drive-axle ratios, it is easy to figure out what ratio to use. This is true especially since there is only two to three depending on the vehicle. However, for those vehicles weighing in 19,500lbs to 26,000lbs on the GVWR (Gross Vehicle Weight Rating) scale, the process becomes more complicated. There are more than a dozen options to choose from. Some drive-axle ratios range from 2.69:1 to 7.17:1 with ten or two different ratios between them. It all depends on the truck’s class, make and model, and the rear-axle capacity.

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