Rear axle ratios and impact on towing
Suppose you have a choice between two axle ratios, say they are a 3.09 and a 3.45. And let's say the vehicle has an 8 speed transmission, so there's plenty of gear flexibility. Ok, so there's roughl...
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It is not all about RPM. How and where the multiplication takes place makes a difference.
If the multiplication takes place in the transmission, then everything has to work harder. The tranny itself will work harder, usually shortening it's life. The u joints, usually won't last as long as if the multiplication was in the rear end gears. Engine braking will be more effective with lower rear end gears as well which will mean that the brakes will have a easier life.
Often in other wise identical TVs, the lower geared one will have a higher tow rating because of these factors
If the multiplication takes place in the transmission, then everything has to work harder. The tranny itself will work harder, usually shortening it's life. The u joints, usually won't last as long as if the multiplication was in the rear end gears. Engine braking will be more effective with lower rear end gears as well which will mean that the brakes will have a easier life.
Often in other wise identical TVs, the lower geared one will have a higher tow rating because of these factors
