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Big bird 1

New Member

• Nov 16, 2011

• #1

Can any one help with re calibrating my speedo have fitted disco diffs and im running on 235/85 x 16 tyres. Cant afford any points.

 

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Sean

Banned

• Nov 16, 2011

• #2

have you got a sat nav ?

 

Dr_evil

Banned

• Nov 16, 2011

• #3

if you dont have satnav

Mark out a stretch of lane on the backroads and time yourself over 100m at 30


Then work out the difference in time Vs how long it should take

 

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Sean

Banned

• Nov 16, 2011

• #4

April 1st has been and gone

 

jamesmartin

Well-Known Member

• Nov 16, 2011

• #5

then how come you still exist now

 

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Big bird 1

New Member

• Nov 16, 2011

• #6

No sat nav stolen that's my problem how do I know I'm doing 30?

 

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Sean

Banned

• Nov 16, 2011

• #7

jamesmartin said:

then how come you still exist now

Click to expand...

don't give up the day job James

 

lee s

New Member

• Nov 16, 2011

• #8

you know how the speedo waves about now just take the lowest reading as your speed.
Ok i did this years ago with a v8 and 3 54 diffs,if you take off 10mph you should be ok,if you go over 50mph start taking a little more off,i never got a ticket so should be ok..
Get a pal to drive in front at 30mph etc to know for sure

 

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mathewpink

New Member

• Nov 16, 2011

• #9

Hi if u search it on google there is a couple off companys do it. They ask you to fill a form out with tyre size and things then tell u how to find the W factor. Then u send the info and the speedo headcto them and they calibrate it i think it said about £60

 

V8jon

Well-Known Member

• Nov 16, 2011

• #10

What phone do you have? If you have the iPhone there's a free app called car dashboard which I use as a speedo and it's just as accurate as a sat nav.

 

Last edited: Nov 16, 2011

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Big bird 1

New Member

• Nov 17, 2011

• #11

Thanks Mathewpink I will try that at least you understood its my speedo I want to adjust, sat nav is ok but they loose signal now & then.