speedo recalibration.

[RodLeach]

Right, My speedo is fecking miles out!!!!

I know because the tyres are bigger for the same rotation im covering more ground so its obvious the speedo would be wrong.

How hard is it to correct?!

It is shocking far out!

[Dodge]

Mine is more accurate with the 33s.

[RodLeach]

Mine is more accurate with the 33s.

mine are 35's


So i guess, the hike from stock to 33 gets the speedo closer an then going to 35 gives a similar % increase from stock to 33?!

Sound about right?

[MattF]

You do seem to have somewhat of a growing obsession with speed related subjects of late Wod. Anything you're not mentioning?

[nero279]

going from 33s to 35s would throw your speedo out to read low by 5.7%, or 3.5 mph at 60.

from 31s to 35s gives an error of 11.6% low, equates to 6.9 mph at 60.

according to http://www.dakota-truck.net/CGI-BIN/TireCalc.cgi

[Dodge]

Should have said more, mine is more accurate with 33s but still reads faster than I'm going . . . safer for my licence so not going to try and remedy it. If I went to 35s it would probably be even closer.

I'd suggest a rolling road. My local lucas centre has one.

[TobyJug]

hey Rod,

what side is the speedo out?

Mine reads 60 but I am actually 69 lol
20 is nearly 30 etc

I was on the expressway when I just got the truck and thought...:

"mmm bit high in the rev's for 60.... d@mn everyone is driving so slow 2day.... "

Hehe
I have cured it tho....

Just leave the satnav in more....


anyway good luck with that.....

[Apache]

I'm guessing that yours is a mechanical one Rod, due to age of the truck. In which case, its a new face for the speedo, which you'll have to make yourself.

Electronic speedos can be recalibrated.

[RodLeach]

Its an electronic speedo. Its only prefacelift models that are mechanical.

An sorry dodge. Wouldve mentioned it but i think most people know that im the "to$$er with the silly wheels"

an Matt, have i been talking about speed a lot?!?

[RodLeach]

going from 33s to 35s would throw your speedo out to read low by 5.7%, or 3.5 mph at 60.

from 31s to 35s gives an error of 11.6% low, equates to 6.9 mph at 60.

according to http://www.dakota-truck.net/CGI-BIN/TireCalc.cgi

I think that seems about right mate. or at least very close to.

hey Rod,

what side is the speedo out?

Mine reads 60 but I am actually 69 lol
20 is nearly 30 etc

I was on the expressway when I just got the truck and thought...:

"mmm bit high in the rev's for 60.... d@mn everyone is driving so slow 2day.... "

Hehe
I have cured it tho....

Just leave the satnav in more....


anyway good luck with that.....

thats what its like in mine at the moment mate!

[BUSHWHACKER]

Its an electronic speedo. Its only prefacelift models that are mechanical.

An sorry dodge. Wouldve mentioned it but i think most people know that im the "to$$er with the silly wheels"

an Matt, have i been talking about speed a lot?!?

J reg, (late 1991) was the changeover year from cable drive to speed sensor.

If the needle rests on a pin at zero, then it's electronic.

[RodLeach]

J reg, (late 1991) was the changeover year from cable drive to speed sensor.

If the needle rests on a pin at zero, then it's electronic.

ah, thought it was just pre facelift ones.

mine is electronic, did the white dials. plus i think mine is a 92..

[BUSHWHACKER]

ah, thought it was just pre facelift ones.

mine is electronic, did the white dials. plus i think mine is a 92..

Have a look at the tag on the driver's seatbelt, the manufacture date will be on there.