How does the axle ratio affect fuel economy?
Additionally, the fuel economy gains or losses from an axle ratio change may be directly offset by the transmission selected. The transmission gearing directly affects the fuel economy at a given speed. The engine’s rpm and fuel consumption are generally lower in higher gears.
What are the rear end gears fuel economy?
Rear End Gears Fuel Economy. This is the ratio of gears in the rearend (differential) that you may have heard of in the numerical terms 2.73 to one, 3.23 to one, 3.55 to one, 3.73 to one, and 4.10 to one (commonly written in the following manner 3.23:1 with a colon). These numbers specifically relate the ratio of the speed at which…
How does the gear ratio affect fuel consumption?
Gear Ratio Effect. The engine’s rpm and fuel consumption are generally lower in higher gears. For example, a transmission with four standard speeds operating at 55 mph may see a 200 rpm difference between a high and low axle ratio, whereas a transmission equipped with an overdrive may only see a 160 rpm difference between the same two axle ratios.
Which is better for fuel economy 3.23s or 2.73s?
Switching from a set of 3.23s to 2.73s will lower your auto’s normal operating rpm range during driving which will translate to higher fuel economy for you the driver. The difference can be anywhere from a few mpg to several mpgs depending on how much of a smaller ratio you select.
How is rear axle ratio related to gas mpg?
Rear Axle Differential Ratio Comparisons for Gas MPG. A vehicle’s rear axle ratio is numerically expressed. A higher number denotes a lower ratio. For example, if the axle ratios were listed as 3.31:1 and 3.42:1 and 3.55:1 and 4.10:1, the lowest ratio of the four gears is 4.10:1.
Rear End Gears Fuel Economy. This is the ratio of gears in the rearend (differential) that you may have heard of in the numerical terms 2.73 to one, 3.23 to one, 3.55 to one, 3.73 to one, and 4.10 to one (commonly written in the following manner 3.23:1 with a colon). These numbers specifically relate the ratio of the speed at which…
Gear Ratio Effect. The engine’s rpm and fuel consumption are generally lower in higher gears. For example, a transmission with four standard speeds operating at 55 mph may see a 200 rpm difference between a high and low axle ratio, whereas a transmission equipped with an overdrive may only see a 160 rpm difference between the same two axle ratios.
Which is the lowest axle ratio in a car?
For example, if the axle ratios were listed as 3.31:1 and 3.42:1 and 3.55:1 and 4.10:1, the lowest ratio of the four gears is 4.10:1. The lower the gear ratio, the more rpm required to maintain a given speed with equivalent tire sizes.