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I have the 42rle with 33 inch Nittos. Is this the right gear choice? Currently turn 1800 at 70 and will be at 2500 rpm with 4.88s.
 

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Have you seen this gear chart? Gives you a good idea of where you'll be for tire size and gearing. I'm assuming you have the 3.8L engine?
 

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Thanks. I did see that one. I do have the 3.8L my tires measure 31.5 on the Jeep itself. 2514 at 70 mph. I won't go with a bigger tire and it'll be for daily driving. Out of overdrive with the 373s I would turn 3000 locked into 3rd at 70. That was probably a little bit towards the high side but I figured mid 2000 rpm would be a great range for the 3.8.
 
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