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Old 04-19-2007, 12:55 AM   #1
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what gears should i get?

i need ur opinion on what gears to get. I do alot of street driving with some highway, i have 35 inch tires. I want something to bring my jeep back to stock power. Alot of magazenes say that 4.10 brings it back to stock for 35 inch tires, but i dont think thats enough. Its alot of money so i want to get it right the first time. I was thinking 4.56. what do u guys think.

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Old 04-19-2007, 01:39 AM   #2
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Whoever wrote that 4.10 brings the power back with 35" tires was totally wrong, not even close.s Heck, Jeep ships the Rubicon that has 31" tires with 4.10 gears so 35" tires have no business with 4.10 gearing.

If you have a manual transmission with overdrive or a 4-speed automatic with overdrive, 4.88 is ideal. No kidding, ideal. Only if you're running the 3-speed automatic should you go any higher than that and in that case, 4.56 would be ideal.

I'm personally running a 5-speed with 35" tires and 4.88 gearing on my daily driver TJ and the RPMs are absolutely perfect. At 70 mph, it's only turning over around 2700 RPMs. The slightly higher RPMs you would see than how it ships from the factory with, say, 30" tires is necessary because of the larger tire's heavier weight, increased rolling resistance, increased radius creating more leverage against the engine and drivetrain, and that a lifted Jeep creates more wind resistance to overcome.

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Old 04-19-2007, 09:04 AM   #3
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Go atleast 4.56, that would be just lower than stock w/35s.
You should consider 4.88s, especially if you might go with a bigger tire.
I'm taching 2k rpm @ 60mph with 4.56 on 33s.

Quote:
Originally Posted by upinar View Post
i need ur opinion on what gears to get. I do alot of street driving with some highway, i have 35 inch tires. I want something to bring my jeep back to stock power. Alot of magazenes say that 4.10 brings it back to stock for 35 inch tires, but i dont think thats enough. Its alot of money so i want to get it right the first time. I was thinking 4.56. what do u guys think.
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Old 04-19-2007, 11:00 AM   #4
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Quote:
Originally Posted by kcruisin View Post
<snip>
I'm taching 2k rpm @ 60mph with 4.56 on 33s.</snip>

im taching around 2300/2400ish at 60 with 4.10s and 31s.. (6spd)
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