teeth 1 1 For 4 27 to 1 ratio and 6 70 15 tires 1 I Gear driven speedometer 22 teeth Use W For 5 38 to 1 ratio ... Gear drive speedometer 6T For 3 73 ratio X 1 Gear driven speedometer 20T X 1 Gear driven speedometer 22T X 1 s Gear driven speedometer 18T X 1 I Gear