Tire/rim combo ?
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Joined: Sep 2021
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From: West Hartford,
Tire/rim combo ?
Hello! first time posting. ? on me 98 Ranger XLT I'm using "16 rims with basic 225/70r/16 all season tires, i suspect the speedo is no telling the true MPH, am i correct. Thank!
Welcome to the forum
On back of Drivers door is the "build label" for your Ranger, it will have the Stock tire size it came with, YOUR speedometer was calibrated for that DIAMETER tire
So you will need to look up that tires diameter, 1998 Rangers had 4 or 5 different tire sizes, you need to find out yours
Smallest 1998 Ranger Stock tire was 24.7" and largest was 28.8"
Rim size doesn't matter just tire diameter matters for speed calibration
225/70r/16 is a 28.4" diameter tire
In 1998 Ranger the speed calibration is done in the GEM module so you need to use a computer running Ford software to re-calibrate it
Forscan is a DIY software that can do that re-calibration
On back of Drivers door is the "build label" for your Ranger, it will have the Stock tire size it came with, YOUR speedometer was calibrated for that DIAMETER tire
So you will need to look up that tires diameter, 1998 Rangers had 4 or 5 different tire sizes, you need to find out yours
Smallest 1998 Ranger Stock tire was 24.7" and largest was 28.8"
Rim size doesn't matter just tire diameter matters for speed calibration
225/70r/16 is a 28.4" diameter tire
In 1998 Ranger the speed calibration is done in the GEM module so you need to use a computer running Ford software to re-calibrate it
Forscan is a DIY software that can do that re-calibration
