Overall Transmission Ratio I, Calculating

WARNING: This page is about a different variant/trim than selected.

Example:

	5th Gear	Final Drive
Drive gear	ZG₁ = 39	ZA₁ = 18
Driven gear	ZG₂ = 29	ZA₂ = 61

i = Z₂ : Z₁^*

i_G = gear ratio = ZG₂ : ZG₁ = 29: 39= 0.744

i_A = axle ratio = ZA₂ : ZA₁ = 61 : 18 = 3.389

i_total = total ratio = i_G x i_A = 0.744 x 3.389 = 2.521

^* Z₁ = number of teeth on the drive gear, Z₂ = number of teeth on the driven gear