How do I find my vehicles axle ratio?
How do I find my vehicles axle ratio? Method 1: Count the number of teeth on the ring gear and the pinion. Divide the number of the ring gear's teeth by the number of the pinion's teeth. This will give you the axle ratio. What is better 3.21 or 3.92 axle ratio? The standard 3.21 axle ratio then gets you a maximum tow rating of 8,440 pounds. A higher axle ratio (like the 3.92 we mentioned earlier) will allow for higher towing capability, but it requires higher engine rpm for any given speed and then results in lower fuel economy....