Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: dblades on August 27, 2006, 11:37:12 AM

Title: Wheel and Tyre Question
Post by: dblades on August 27, 2006, 11:37:12 AM

Guys

I have a set of 15" (I think) steel wheels fitted with 30x9.5 R15LT tyres... can anyone confirm if these will fit onto a Jeep Cherokee 2005 2.8 CRD Limited????

They fit on my Wrangler TJ 2005 perfectly!!

Many thanks

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Post by: chrisjones on August 27, 2006, 01:19:26 PM

The stud pattern is the same, but the backspacing is different.

They'll fit on YJ's, TJ's and XJ's no problem at all.

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Post by: dblades on August 27, 2006, 01:45:41 PM

Quote from: "chrisjones"

The stud pattern is the same, but the backspacing is different.

They'll fit on YJ's, TJ's and XJ's no problem at all.

So am I best not to use them on the Cherokee??? Not really sure what the backspacing is??

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Post by: Tank on August 27, 2006, 02:33:21 PM

How to Measure Wheel BackSpace
  Items required to measure wheel backspace:  Tape measure
 Straight edge
 Wheel w/o tire (preferred)
 
 The easiest way to measure backspace is to lay the wheel face down onto the ground so the backside of the wheel is facing up.  Take a straight edge and lay it diagonally across the inboard flange of the wheel.  Take a tape measure and measure the distance from where the straight edge contacts the inboard flange to the hub mounting pad of the wheel.  This measurement is backspace.  The above photo shows three wheels with 2",3", & 4" backspace.  
     
  Measuring Wheel Offset
To calculate offset you'll need the following measurements:

 Wheel backspace
 Wheel Width
 Wheel Center line (outboard flange to inboard flange measurement / 2)

Subtract:

 Wheel center line from Wheel backspace to get offset.    If backspace is less than the wheel centerline the offset is negative
 If backspace is greater than the wheel centerline the offset is positive
 

Tip:

 To convert from inches to mm multiply by 25.4
 To convert from mm to inches divide by 25.4

 
 
   
 Full info available here

http://www.rsracing.com/tech-wheel.html (http://www.rsracing.com/tech-wheel.html)

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Post by: Mike Pavelin on August 27, 2006, 03:07:09 PM

I don't think they'll clear the front calipers on a KJ.

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Post by: dblades on August 27, 2006, 03:09:35 PM

thanks guys, very grateful for the advice.