I want to change my existing 16" split rim with 7.50 x 16 tires to an OEM 15" rims with 215/75r15 tires.
This will inevitably put the speedometer out as the 7.50 x 16 tires are about 4" bigger in diameter than 215/75r15 tires. Hence, I will need to change the gear ratio for the speedometer.
Does anyone know what the correct speedometer drive and driven gears are for 1975 FJ55 (I'm assuming it has a 4:11 diff ratio)?
This will inevitably put the speedometer out as the 7.50 x 16 tires are about 4" bigger in diameter than 215/75r15 tires. Hence, I will need to change the gear ratio for the speedometer.
Does anyone know what the correct speedometer drive and driven gears are for 1975 FJ55 (I'm assuming it has a 4:11 diff ratio)?
