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Speedo/tire size

Old Jun 16, 2009 | 04:43 PM
  #1  
Jesse James's Avatar
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From: Holland Landing, Ontario, Canada (North of Toronto)
Year: 1996
Model: Grand Cherokee
Engine: 4.0L Inline 6 Cylinder
Default Speedo/tire size

so i just bought some American Racing wheels and they came with P215's on em (dont worry i'm gettin new tires next week) but my question is do they affect ur speedo? kuz i was cruising through town today doin what my speedo said was 50km/h but it definately didnt feel like it??!! i had icon wheels with 235's on em and thats what i'm used to but would the 215's throw off the speedo at all? kuz even doin what my speedo says is 100km/h it only feels like i'm doin about 80ish.

Thanks guys.


Jesse J.
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Old Jun 16, 2009 | 04:59 PM
  #2  
jd4x426's Avatar
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Year: 1996
Model: Cherokee
Engine: 4.0
Default

any difference in tire size will throw off your speedometer you will have to change the speedometer gear in you transmision to a different size there are charts to help you get the right one here is one http://www.jeep4x4center.com/jeep-ti...atio-chart.htm

Last edited by jd4x426; Jun 16, 2009 at 05:01 PM.
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Old Jun 16, 2009 | 05:00 PM
  #3  
okcjeeper's Avatar
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From: Okc area
Year: 1991
Model: Cherokee
Engine: 4.0 I6
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Here's a good chart and also gives the factory part#'s..

http://alljeep.com/tech/speedochart.html
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Old Jun 17, 2009 | 02:26 PM
  #4  
Jesse James's Avatar
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From: Holland Landing, Ontario, Canada (North of Toronto)
Year: 1996
Model: Grand Cherokee
Engine: 4.0L Inline 6 Cylinder
Default

thanks for the info guys. i'm gettin 30's next monday hopefully so that stuff will come in handy.
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