Hey gang,
I put a set of 10.5X31 on my 93 bronco. will this throw off my speedometer? and if it will how do I fix it? Thanks in advance. Tom

 

Yes. This will throw off your speedometer. If you have the E4OD, you should recalibrate this to improve your shift quality.

The link below will show you step by step, how to calibrate your speedometer to your specific tire size.



https://www.ford-trucks.com/article/...ND_BRONCO.html

Good Luck,
Mike

 

Mine is dead on. Here is how I did it.

https://www.ford-trucks.com/forums/3...ht=speedometer