speedometer correction
Thread Starter
|
New User
Joined: Jul 2001
Posts: 7
Likes: 0
speedometer correction
speedometer correction
Hi All,
I wsa going to increase my tire size from 145/R75/16 (stock)
to 265/R75/16 and was told that all I needed to do was to change the VSS gear. My local Ford store is of no help.. They say they have no gear listing for a 265 16 tire. Can anyone give me specific information about this. Part#s, pnone #s, or web sites??
1998, 4x4 250 light duty, 4.6
Regards,
David
Hi All,
I wsa going to increase my tire size from 145/R75/16 (stock)
to 265/R75/16 and was told that all I needed to do was to change the VSS gear. My local Ford store is of no help.. They say they have no gear listing for a 265 16 tire. Can anyone give me specific information about this. Part#s, pnone #s, or web sites??
1998, 4x4 250 light duty, 4.6
Regards,
David
Elder User
Joined: Feb 2000
Posts: 601
Likes: 1
From: South Sioux City, NE USA
speedometer correction
Do a search here for "Speedo Calibration". I know it has come up in these forums a few times.
As far as the gear goes, you don't have one. That is why the parts people couldn't find one. The calibration is done with the speedometer and a certain procedure. I don't know the procedure, but I do know that it has been posted on these forums before.
Roger Lane
Test Analyst
Sr. Automated Test Engineer
As far as the gear goes, you don't have one. That is why the parts people couldn't find one. The calibration is done with the speedometer and a certain procedure. I don't know the procedure, but I do know that it has been posted on these forums before.
Roger Lane
Test Analyst
Sr. Automated Test Engineer
Freshman User
Joined: Oct 2001
Posts: 34
Likes: 0
speedometer correction
I am going to assume that you intended to say 245 not 145. 145 would be a very small truck tire!
If you changed from a 245/75/16 tire to a 265/75/16 tire your final drive would only change about 3%. If your speedo registered 60 you would actually only be going 62. I would hardly worry about that small of a change in gearing in terms of redoing your speedo.
If you changed from a 245/75/16 tire to a 265/75/16 tire your final drive would only change about 3%. If your speedo registered 60 you would actually only be going 62. I would hardly worry about that small of a change in gearing in terms of redoing your speedo.
Postmaster
Joined: Feb 2000
Posts: 2,759
Likes: 2
From: Auburn,Al
speedometer correction
to recalibrate the speedo, the dealer should have a computer that they hook up to the truck's computer, its all computerized now, no more speedo gears,
1985 F-150/351Ho/c6/4wd~96,000 miles
1979 F-150extcab4x4/460/c6/6inchlift w/60rear44frnt 4.10 gears, 250 springs
37 boggers
1985 F-150/351Ho/c6/4wd~96,000 miles
1979 F-150extcab4x4/460/c6/6inchlift w/60rear44frnt 4.10 gears, 250 springs
37 boggers
Thread
Thread Starter
Forum
Replies
Last Post
brider
1961 - 1966 F-100 & Larger F-Series Trucks
16
May 8, 2005 05:55 AM
fatdaddy
Brakes, Steering, Suspension, Tires, & Wheels
6
Feb 11, 2002 04:21 PM
frink
Brakes, Steering, Suspension, Tires, & Wheels
4
Mar 12, 2001 12:01 PM
