GQ 35's Speedo Correction

[JAFO74]

Hi all, am just wondering what I have to do to correct the 10% difference now that I have 35's. It doesn't bother me but the engineer seems to have a problem with it. Can I purchase a correction kit or something, if so any details of where to purchase from would be appreciated.
Thanks in advance
Jafo74

[RUSSMUSS]

i ran one of these on my gq shorty for a long time with 35s & never had a problem you can switch it back to standard tyres if you like as well.

http://www.marks4wd.com/products/tyre_m ... ction.html" onclick="window.open(this.href);return false;

[thelux]

You can also change your diff ratio's to correct your speedo

[GQTrav]

If it's the same as a GU (which I believe it is), you can change the plastic gear on the transfer case end of the speedo cable, it's about a 5 minute job and i think a new gear was about $40 from Nissan.

[Palmer]

There is no need to purchase a correction box. Remove the instrument binnacle, then remove the speedometer. A trim pot is fitted & using a fine Phillips screw driver, rotate the control a fraction anti-clockwise, approx 0.1 of a turn. Your speedometer reading should then be within 2 - 5 km/h of the actual, possibly reading a fraction optimistically. Your odometer will still not record acurrately.

[outlawgq]

You can change the speedo pinion takes about half hr part no. 32703-31g15 cost me $79 from nissan last month. it brought my speedo to 4% slow which my engineer was happy with as he said the rta spec +-4% so I was right on the line. I have that marks tyre match box never opened as I used the pinion instead $150 if you want it. Unless you are going to use 2 different sets of tyres or change diff ratio's in the future I'd just go with the pinion change. Depending on the brand of 35's (they varey in size from brand to brand) of the so called 35", changing the pinion may get you closer to 0-1% out etc or it may thro you over the 4%. Apparently with the tyre match box you can dial the speedo in to be 100% correct.