I have an '08 STX. Recently I bought an edge programmer for my larger tires in order to correct the speedo (295/70/18). In order to fix the speedo its necessary to put in the new tire size, but to also adjust the gear ratio. I know very little about gear ratios let alone finding the new one. What should I put in for the new gear ratio? Thank you. I will probably need to give out more information in order to figure it out so just ask.

 

Look at your door jamb sticker for your axel code.....then post it up here and someone will tell you what it is or do a search on" axel codes"

Click link>>>https://www.f150online.com/forums/1755513-post14.html

 

3:73 .....limited slip?

 

If it was B6....then yes 3.73 limited slip.....

 

Ok now what do I do with that