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Travis, what size tire do you have on there now? The 285's are only 32.8" x 11.2 x 16, if you're gonna run this size you'll wanna get 1.25" spacers to widen the stance and get the look you're wanting.
 
For 35's you will definitely have to regear. With 33's you could get by with the stock 4.10's if that's what you have.
 
For 35's you will definitely have to regear. With 33's you could get by with the stock 4.10's if that's what you have.



I completely disagree. If you drive it like a truck and not a sports car, 4.10 is adequate. If you offroad a lot, you'll want lower gears but 4.10 is sufficient for most driving, IMO. My gas mileage hasn't suffered terribly and what I did lose isn't from the gearing, it's from having freakin' 35s. I have no problems merging on highways. I still very rarely get over 2,500 rpms.



I say this with the caveat that I will be swapping to 4.56 gears but not until I swap axles.



 
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I'm probably going to go 33 but down the road ill regear to 4.56 just for my own peace of mind and that way if I decide to go bigger I can
 
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