im getting some 17x9 cobra wheels (5 spoke) and i was wondering what tooth speedo gear would i need? the tires are 275-45-R17
You will need to know your gear ratio and tire height, along with how many teeth on the trans output shaft where the speedo rides, to get the correct gear
do a search on jeffs graveyard bronco, I think thats the site, pretty sure he got info you`re looking for