rear end gears

[tealcobra93]

i have a question I have a 93 cobra with 3.73s now the last owner told me the car now has 82k miles but is more like 62k miles since the 3.73s make the miles go up faster is this true? the lower the gears the faster the miles go up???? I noticed my car miles go up very fast since I use it occasionally and in 4 months im up to 86k miles now what you guys think??

 

[blackfang]

If the rear gears are changed and the speedometer gear is changed accurately to the right gear, then no, the miles are true. Now if you change rear gears and do not change the speedo gear or put the wrong one in, then yes the miles will be off.