I need help in a bad way. I don't know the ratio for my 1991 ford explorer w/4wd and autolock hubs. I want to replace the front rotors and the difference for each rotor is @$70.00. Any help would greatly appreciated.

 

Read the tag on either the front or rear axle. It will tell you whether you have 3:27's, 3:45's, 3:55's or 3:73's. I know you can read the one on the back no problem as long as it isn't rusted too badly. You can also tell by the code on the vehicle identification label on the drivers door. You will need a service manual that will tell you what the code translates to the axle ratio.