GU Speedo Calibration
Submitted: Monday, Nov 15, 2004 at 20:50
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Brent.n
Hello everyone,
Just about to drob my GU in and get a full fit out. I have a 4.8 petrol manual and am fitting 35 inch tyes and 3.76 diff ratios.
Does any one know if the speedo will be corrected with these ratios or will i have to get it calibrated?
Thank you
Reply By: Member - JohnR (Vic) - Tuesday, Nov 16, 2004 at 09:44
Tuesday, Nov 16, 2004 at 09:44
Doubt it Brent. I find
mine isn't far out with slightly over standard tyres. Borrow a GPS to get a real time read out or of course get it recalibrated.
Of course what you didn't ask was your truck legal. 15mm over diameter is what is allowed for by state authorities for ADRs.
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Follow Up By: Brent.n - Tuesday, Nov 16, 2004 at 20:32
Tuesday, Nov 16, 2004 at 20:32
John i am not concerned at all about the 15 mm rule once you have an engineers report you are sweet. At this moment the patrol is at the engineers with a 5 inch lift and 35 inch tyres.
the cops cant do anything once you have that little bit of paper because it makes it legal
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Follow Up By: Brian - Tuesday, Nov 16, 2004 at 23:22
Tuesday, Nov 16, 2004 at 23:22
I went from 265/70-16 to 285/75-16.
Checked the Speedo with GPS and it was 7kph high ie at 100 it is 107kmh
Brian
2001 Gu Wagon 4.2TD
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