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Tyre Size

Renee
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Renee Contributor

Renee

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Yes they're 16's. And no it shouldn't affect speedo readings because they're the stock tyre sizes.

Only explanation can be your speedo is out. Get it re-calibrated maybe?

Ok. Thanks for the advice! How much do you think it might cost to get re-calibrated? Thanks heaps

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funkymonkey Grand Master

funkymonkey

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its factory equipped to read true on 205/55R16 88V tyres, so you shouldn't see any difference in speed due to the tyres. R32's do run a speedo cable to the cluster, and this can sometimes get sticky (ie the steel cable strands can seperate if bent and catch on the sleeve, causing it to spike and in general read wrong).

GPS speedo checking or dyno speed checking is probably the way to make sure if there's a variance in speed. Try with another cluster first as that's easiest to swap, then try with another speedo cable if you can't make it go away with a different cluster.

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Renee Contributor

Renee

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its factory equipped to read true on 205/55R16 88V tyres, so you shouldn't see any difference in speed due to the tyres. R32's do run a speedo cable to the cluster, and this can sometimes get sticky (ie the steel cable strands can seperate if bent and catch on the sleeve, causing it to spike and in general read wrong).

GPS speedo checking or dyno speed checking is probably the way to make sure if there's a variance in speed. Try with another cluster first as that's easiest to swap, then try with another speedo cable if you can't make it go away with a different cluster.

OK. Thanks heaps on the detailed advice ;) The spedo pointer does bounce a little bit at 100 and i think that has got something to do with the cable to so ill check it out. Thanks

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QWK32 Veteran

QWK32

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its also common for the little plastic square drive on the cluster end of the speedo cable to wear out and give false reading. happened to me, speedo was out by about 15 k's then it bounced around for a couple of days the just died.

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blind_elk Grand Master

blind_elk

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It might also be that someone has removed the needle to fiddle the ks.

Which way is it "out"? Remove the speedo unit, manually turn the needle around to the indicated speed (for a "real" 60 kph), and gently move the needle to the correct speed.

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