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View Full Version : 4.56 gears what RPM



Bigtmiller
11-14-2019, 06:33 PM
So if you have 4.56 gears in a JK. What would be normal RPM's at 70 mph going down the HWY? 2800? Nothing wrong just wondering what everyone is getting.

Thanks

T

Jkjon
11-14-2019, 06:46 PM
Tire size?

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Brute
11-14-2019, 06:54 PM
Tire size?

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auto or manual?...

Bigtmiller
11-14-2019, 08:03 PM
sorry,

Auto, 35's

-AINOKEA-
11-14-2019, 08:13 PM
sorry,

Auto, 35's

What year?


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Bigtmiller
11-14-2019, 08:35 PM
2017. JK, 2 door

-AINOKEA-
11-14-2019, 09:22 PM
Donít have real world experience with what youíre asking for, but this chart is pretty accurate for my setup.

337840

Edit: this is at 70mph

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AgBass01
11-14-2019, 09:45 PM
This chart is pretty dang near spot on. I have a 12 JKU automatic and recently went to 4.56 but haven't had a chance to go up to 35s yet. Running 32s and sitting around 3k rpm at 70mph.
Donít have real world experience with what youíre asking for, but this chart is pretty accurate for my setup.

337840

Edit: this is at 70mph

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jorgelrod
11-15-2019, 01:10 PM
That chart is pretty accurate, I run about 2700RPM at 70MPH on my 2014 with Auto Tranny and 35's