Thaught this may be of some interest to peoples with different tyre sizes and incorrect speedo readings.
http://www.jaycar.com.au/productView.asp?ID=KC5435
speedo correction
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- Grease Monkey
- Posts: 132
- jedwabna poszewka promocja
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speedo correction
1. 94 Scotia White GPX, XYZ Racing coilovers, 17" Rims (Son's Car)
2. 99 Hyundai Excel sprint (Another Son's Car) GOT TO SELL THIS
3. 02 Mazda E1800i (paper delivery van)
4. 02 Prado V6 (Wife's Car)
5. 04 Toyota Camry Sportivo 3L V6 (My Car)
6. 02 Ford Focus 2L Zetec Black (other sons other car)
2. 99 Hyundai Excel sprint (Another Son's Car) GOT TO SELL THIS
3. 02 Mazda E1800i (paper delivery van)
4. 02 Prado V6 (Wife's Car)
5. 04 Toyota Camry Sportivo 3L V6 (My Car)
6. 02 Ford Focus 2L Zetec Black (other sons other car)
- Bennoz
- National President
- Posts: 23676
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- Location: Sydney
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Re: speedo correction
That's pretty cool! Would need to talk to our resident Jaycar employee though, be damned if I'm paying $50+ bucks for a simple circuit board with no box 
Be weird for me too... my speedo has been out for so long know, I'm used to it! At 100kph, its reading exactly 4kph slow. Trials & tribulations of a 235-45 on an 18.

Be weird for me too... my speedo has been out for so long know, I'm used to it! At 100kph, its reading exactly 4kph slow. Trials & tribulations of a 235-45 on an 18.
- aza013
- NSW Coordinator
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Re: speedo correction
I am the same 3-4 K's out at 100.
But I like that as every 100K's I drive saves me 3-4K's on the odometer, so on the cluster I have only driven 96-97K's
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But I like that as every 100K's I drive saves me 3-4K's on the odometer, so on the cluster I have only driven 96-97K's

- Technikhaus
- Oldtimer
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Re: speedo correction
MIghty Car Mods have also done a video of this If I remember correctly, showing how to set it up etc.
Man '96 FTO GPX
Man '89 Legacy RS Rally car
Man '90 MR2 GT
Auto '08 Fairmont Ghia
Man '89 Legacy RS Rally car
Man '90 MR2 GT
Auto '08 Fairmont Ghia