Gross Axle Weight Rating GAWR The Gross Axle Weight Rating is the maximum amount of weight that can be supported by each axle, as prescribed by the manufacturer. Gross Combined Weight Rating GCWR Gross Combined Weight Rating (GCWR) is the maximum weight of a completely loaded vehicle and its trailer, as designated by the manufacturer. Gear Ratio GEAR RATIO This is a numerical ratio of a series of gears in relation to each other, based on the number of turns of the input shaft, compared to turns of the output shaft. Gear ratios are determined by the number of teeth on each gear (and therefore the size of each gear). Ground Clearance GROUND CLEARANCE Ground clearance is the measurement from the lowest-hanging point under a vehicle (usually a differential, part of the suspension or the exhaust system) towards the ground. A high ground clearance allows a vehicle to drive mor...