[roadracer]

This site will help you answer your question. It's impossible to answer without more information related to your previous setup

http://home.netcom.com/~jonescha/Photos/DCP_0355_178x109.jpg
"If you're under control you're not going fast enough"
Parnelli Jones
Try my website

 

[Guest]

When I changed the tires on my car I had a friend follow me to see if my speedo was correct or not. When we determined how far it was off I just pulled the gear out of the transmission and took it to the ford dealer and the parts guy had the correct gear in stock.

By doing it this way I did not need to know tire diameter, rear axle ratio, and transmission final drive ratio. If a dealer is close then this is the best way to go.

 

[Guest]

Kevin, I will give that a try. Out Ford dealer is about 2 miles from me ;-D

Just found out that i'm not a tire-kicker anymore!

Dan
65 FASTBACK

 

[G1967T]

Been there, done that several times. No speedo gear change necessary. You have selected the perfect size.

Russ

http://albums.photopoint.com/j/View?u=1595962&a=12199293&p=44747301&Sequence=1&res=high.JPG

 

[johnpro]

I have that exact same tire size combo on 15x7 TTD's on my '66 coupe (225/60s in back and 215/60s in fron). I did nothing to the speedo gear and it is right on.

If you always do what you've always done,
You'll always get what you've always got
http://www.classic-mustang.net/johnpro
http://www.classic-mustang.net/john66/mustang/pics/66fsides2.jpg