Tires brought speedometer back into range after axle swap

[poor ole blue]

I did the axle swap earlier this year . I found that in order for the speedometer to match the speedlimit I had to drive 10 miles an hour faster . That changed when I put 265\75\16 Goodyear Wranglers on a Cragar Steel rim . Brought the speedometer right back into range . This maynot be the place to post this but really didn't see anyplace else to do so . I had wanted to add it to tech library .