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Old 20-11-2015
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Default 2016 jku Rubicon 5 speed auto running 35s on 4.10 diffs

Hey, have you guys had any good or bad experiences with the 3.6 pentastar rubicons running 4.10 diffs and 35s? Mine will be an auto when it finally gets on the boat and makes its way into my driveway!
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Old 20-11-2015
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You will be fine, just make sure to recalibrate for the 35s.
About the only thing you will notice is that crawling will be a little faster than manual Rubis with the same tyre size, but that was always the case anyway.
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You will be fine, just make sure to recalibrate for the 35s.
About the only thing you will notice is that crawling will be a little faster than manual Rubis with the same tyre size, but that was always the case anyway.
i currently own a manual Rubicon on 32s how much of a difference am i looking at? on 32s with the manual it nearly stops going down a hill
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Mate of mine has the 3.8 manual on 35s and if anything its better in low range for most work as its a lot more useable! No probs on the highway either, but you will need Procal or similar to reset the speedo and auto tranny shift points for the best result.
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Mate of mine has the 3.8 manual on 35s and if anything its better in low range for most work as its a lot more useable! No probs on the highway either, but you will need Procal or similar to reset the speedo and auto tranny shift points for the best result.
good to know... and yeah the 73.1 crawl ratio is pretty extreme unless rock crawling and yeah im planing on getting one from double black when my roof rack comes in later next week, the flashcal or the flashpaq should do everything i would need yeah?
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i currently own a manual Rubicon on 32s how much of a difference am i looking at? on 32s with the manual it nearly stops going down a hill
Clubmate with auto 3.6 on 35s has to keep braking so as not to run into the back of me. I'm on 34s. If I was on 35s too I would still be going slower than him. One thing the auto does have though is Hill Desent Control but that uses the brakes.
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Originally Posted by SeaComms View Post
Mate of mine has the 3.8 manual on 35s and if anything its better in low range for most work as its a lot more useable! No probs on the highway either, but you will need Procal or similar to reset the speedo and auto tranny shift points for the best result.

does your mate run the stock diff ratios ?
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Originally Posted by Fruju View Post
Clubmate with auto 3.6 on 35s has to keep braking so as not to run into the back of me. I'm on 34s. If I was on 35s too I would still be going slower than him. One thing the auto does have though is Hill Desent Control but that uses the brakes.
do you know if he runs the stock diff ratio? and im hoping its not going to runaway on me down a steep hill... im assuming that it will still be quite slow and controlled but just that bit quicker? well thats what im hoping anyway
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do you know if he runs the stock diff ratio? and im hoping its not going to runaway on me down a steep hill... im assuming that it will still be quite slow and controlled but just that bit quicker? well thats what im hoping anyway
Yeah still stock 4.1 ratio and yes slower than non-Rubis!
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