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Unread 07-12-2013, 12:28 AM   #1
tmarcum51
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1998 XJ Cherokee 
 
Join Date: Jun 2012
Location: Beech Creek, Pennsylvania
Posts: 68
tire sizes

What is the largest tire size able to run on an xj with Hp dana 30 and 29 spline 8.25?

What about with chromos?

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Unread 07-12-2013, 02:45 AM   #2
Timo_90xj
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1998 ZJ 
 
Join Date: Mar 2006
Location: Helsinki, Finland - on the European side of the Atlantic
Posts: 5,694
35s with cromos and staying smart with the skinny pedal works well.

If you have a heavy foot and you like hard trails, anything larger than 31s-32s and you're looking at axle carnage at some point That being said, lots and lots of people use their Jeeps on the hardest trails in Moab, or go through Rubicon couple times a year turning 35s on D30/ 8.25 or D44 rears without issues. It's all about your driving style, but the limits of the fairly small R&P and the generally weakish design of the D30 causes gear deflection (and breakage) at some point. Trussing it and using a HD diff cover makes the HP D30 a lot stronger.
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