Speedo Issue

[D3ft0n3s]

So

We have a 2002 Legacy GT30 Wagon, the mrs used to skite that she never had a speeding ticket ever, and I have had a few.

Anyway, recently, she got one cop ticket of 116k, and one camera of 56k, i GPS\'d the speedo on it ages ago, and it was out, 108k = 100k actual speed.

Is there an easy way, and or what is the best way to have the speedo adjusted?

[DRFVDR]

I would start by checking that your tire size is correct rolling diametre failing that then you can either get the speedo recalibrated OR fit an adjuster from JAYCAR

[D3ft0n3s]

 We are borg said:

I would start by checking that your tire size is correct rolling diametre failing that then you can either get the speedo recalibrated OR fit an adjuster from JAYCAR

Who would i see to adjust it, just general garage? it has correct tyre size on it as far as im aware, as beaurepairs fitted them and went off the numbers printed on the inside of the door.

Whats involved with the one from jaycar?

Thanks for the help

[Joker]

could throw some numbers at this wee tool : http://www.clubsub.org.nz/forum/index.php/topic,634.0.html

not sure a new set of tires is an option but yea Jaycar do an adjuster kit : http://www.jaycar.co.nz/productView.asp?ID=KC5435

User Spark38 here has done a few

BUT to get tickets for those speeds you/she/your mate, would have to be doing 125kph on speedo/118? ish etc (65kph to record 56kph)

is not uncommon to be doing 110kph on speedo and roll past a sign and will tell you your doing 100kph actual/gps, in fact thats OEM

[DRFVDR]

Actually after re reading your post,( i had it that the car was going faster than the speedo)

Pretty much every car built has this error built in, manufacturers do it so that they have no come back about the speedo reading 100km/hr and i was doing 102km/hr and got pinged.

funny thing i found while playing around with my OBD11 reader is that the ecu sees the exact speed it is only the speedo itself that is out.

My new suggestion is drive to your speedo and u will not be caught speeding.

[mac]

im not absolutly sure but i think most legacy speedo\'s are calibrated for for 16" rim\'s.

[DacerX]

doubt that would be correct for 3rd gens tho

[Joker]

bahahaaha cmon Marc 20 years of Legacy\'s and the "all" run 16"s? yea right

 We are borg said:

My new suggestion is drive to your speedo and u will not be caught speeding.

this

I stick to 110 and Pivot speed meter (reads from ECU) = 103 so I never even get pinged on "Holiday weekends" etc

1998 BG5 Legacy GTB

[nickmcgill]

Your generic GPS isn\'t exactly accurate for speed readings either.

They are close but Can be 10~km either way out.

[DRFVDR]

 nickmcgill said:

Your generic GPS isn\'t exactly accurate for speed readings either.

They are close but Can be 10~km either way out.

How ?

I have run 3 gps\'s plus my ecu reader and all were exactly the same