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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 TyrePinion
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 04:00 PM.
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 (6th May 2011), YNOT (28th March 2011)
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