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Author Topic: 31x10.5 tyres and speedo??  (Read 6026 times)

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nick69

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31x10.5 tyres and speedo??
« on: August 28, 2006, 03:30:47 PM »

Guys,

will I have to change the speedo cog when putting 31x10.5 tyres on my standard TJ??

Thanks
Nick
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Mike Pavelin

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« Reply #1 on: August 28, 2006, 04:03:47 PM »

Check your speedo with a GPS and see. They read 5-10 percent high as standard so you might get away with it.
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nick69

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« Reply #2 on: August 28, 2006, 04:27:02 PM »

I dont have GPS :(
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Manda

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« Reply #3 on: August 28, 2006, 05:06:18 PM »

From what I can gather you can't actually get a speedo cog which puts your speedo right for 31's. (I think the cog for 30's is the nearest) but I have been running on 31's for years wihout redoing the speedo, I just allow at least 10%. So do 26ish in a 30, 35ish in a 40 etc. Been fine so far. (Touch wood and all that.  :lol: )
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Mike Pavelin

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« Reply #4 on: August 28, 2006, 05:21:37 PM »

My TJ speedo was spot on with 31s, about 5% over with stock tyres.
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nick69

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« Reply #5 on: August 28, 2006, 05:39:01 PM »

Job done then, I wont give it another thought :D
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Anonymous

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« Reply #6 on: August 28, 2006, 05:54:55 PM »

Mine was almost spot on with 31's with the factory cog in (29 tooth)

EE
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Rikk

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« Reply #7 on: August 28, 2006, 06:27:36 PM »

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MOCAJ

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« Reply #8 on: August 28, 2006, 07:29:36 PM »

Quote from: "Mike Pavelin"
My TJ speedo was spot on with 31s, about 5% over with stock tyres.


 :imwitstupid:
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short term jeep owner since 2005, every truck is a never ending project. Birtys, the best club in Jeepland
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