09-14-2009, 07:30 PM
gotta 94 ranger 2.3/auto with stock axles far as i know.i changed tire size from 225/70/14 to 235/75/15. from what i can tell speedo is 6-7mph slow.took the gear outta trans tail and counted 18 teeth(recounted many times)ford dealer told me the stock gear is 21tooth and by his calculations i need a 19 tooth(which i thought WAS stock)this makes no sense to me.parts guy gave up & gave me the "its special order/no returns?(and i never heard this)"u gotta buy 2 cuz there's 2 to a bag)by my calculations i need a 16tooth but not sure.i get paid for mileage so every day gone by costs a little more. im even tryin' to nudge it up alittle.