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GEAR RATIO CHART
NOTE: This chart is based on engine rpm at
65 mph with the transmission in a
1:1 gear ratio (Third with a three-speed manual, Fourth with a four-speed manual, or Third with an Automatic). Remember, the actual rpm indicated in the chart will be slightly higher (between 100 and 300 rpm) on vehicles equipped with an automatic transmission. This is due to the slip present in an auto transmission's torque converter.
Also needed to take into consideration is, the WEIGHT and ROLLING RESISTANCE of the LARGER tires.
