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Why Gross Vehicle Ratings Matter

Components such as the frame system, transmission, drivetrain, suspension, brake system and tire load rating all have dramatic effects on GVWR. For example, an automatic transmission equipped with a park pawl (the park position on the gear indicator) can limit the GVWR. You alter the GVWR if you delete a cross member, change the load range of your tires or change springs.

While they may not affect the GVWR, other factors such as transmission and rear axle gearing can affect gradeability and driveability. Brakes are matched to the unit’s GVWR, but using inferior replacement brake pads or shoes can have a dangerous effect on stopping ability. Selection of replacement parts matters more than you think, but that’s another article.

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