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28th March 2011, 02:56 PM
#1
Expert
Diff ratio tyre size speedo gear (pinion)
Here's a list of pinions to suit tyre sizes with accompanying diff ratios to get your speedo within specs. It worked for me for engineers. Got my speedo within 4% which is NSW law. cost from Nissan at the time $74. Or you can pay $220 for a Tyre match box. Cheers Jono.
Diff ratio Tyre size Speedo gear (pinion)
Part Number i.e. 4.11:1 ratio running 31” tyres 32703 - 31G 17 Change last 2 digits for gear you need.
3.9:1 Ratio
Tyre Pinion
31 16
33 15
35 14
37 13
4.11:1 Ratio
31 17
33 16
35 15
37 14
4.375:1 Ratio
31 18
33 17
35 16
37 15
4.625:1 Ratio
31 19
33 18
35 17
37 16
Last edited by TuffTD42; 28th March 2011 at 03:00 PM.
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The Following 7 Users Say Thank You to TuffTD42 For This Useful Post:
fixer982 (18th May 2011), Lexx (21st July 2014), Mrowka (30th March 2011), mudski (19th April 2021), Plasnart (2nd December 2018), snicko (5th May 2011), YNOT (28th March 2011)
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28th March 2011 02:56 PM
# ADS
Circuit advertisement
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28th March 2011, 03:24 PM
#2
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28th March 2011, 03:29 PM
#3
Banned
Top find and post mate!!! Well done and thanks!!
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28th March 2011, 05:17 PM
#4
Legendary
Great Post mate, im sure will help out a few members at some point
Qualified Auto-Electrician
Apprentice Sparky
Dont own a Patrol or any 4WD at the moment, hopefully will change into the future
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25th September 2012, 09:34 PM
#5
BIG & BALD
This will come in handy, that's for sure.
Sent from the secret chambers of our secret society, on a secret iPhone, with a secret pin code and eye retina scanning from a secret peep hole, just don't tell anyone OK, cos it's secret........
2011 GU8 ST 3.0 CRD, ARB Bullbar with IPF spotties, scrub bars and side steps, Snorkel, Dual Battery system, Waeco fridge, Turbo Timer, ARB Roof Rack with 5 IPF spotties across the front, Custom full Leather Bucket seats, DPchip, 3" Taipan exhaust, ARE Intercooler & scoop, Autron EGT/Boost and dual volt gauges, ARB front locker.
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28th September 2012, 07:55 PM
#6
Drive is 04 DX wagon, 165Ks, Dual Batts, 12000kg Warn in steel bar, Snorkel, Xray 220 Hid Spots, Cruise, digital EGT, Draws in back with power box, 40Ltr Waeco for the essentuals
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29th September 2012, 06:38 PM
#7
Advanced
Last time i got some gears from nissan. not many in stock in australia. not sure if their is after market parts.
005 GU PATROL 4.2TD WITH SAFARI TURBO, SNORKLE, LONG RANGE TANKS,BULL BAR ,DUAL WHEEL CARRIER, ROOF RACK, TIGER WINCH, STEERING DAMPER , REAR DRAWS AND ENGEL SLIDE,35L WATER BLADDER.
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The Following User Says Thank You to Dmwlking For This Useful Post:
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21st July 2014, 04:56 PM
#8
Thanks mate, an unexpected help for a problem I thought I'd have to just 'follow the traffic' for!
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16th January 2015, 05:22 PM
#9
You can adjust the GQ's speedo
There is a trim pot on the dash pcb - I have posted details elsewhere
1991 GQ LWB 4.2 Carby dual fuel, 32 mud claws, 2 inch lift, LSD's front and back
And its Toooooooo High for the Ball & chain
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20th November 2017, 01:07 PM
#10
how good are you, excellent home work, I have cross checked your post and you are 100% correct with your ratio verses pinion drive gear again WELL DONE
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