Pros and cons for 35s on JTRD

[Wheelin98TJ]

If we were talking about the 3.21s you used to could get on a Wrangler, I'd agree. Was absolutely atrocious on anything but stock tires/wheels. I drove the 3.73 for two years, 4.10 for a year. Pretty good real world use and subjective or not, you're going to be hard pressed to tell the difference. Back to the point/post that brought this up, telling someone they pretty much need to re-gear for 35s just isn't true. Hard core Jeep enthusiast/gear head/engineer that can "feel it"? Possibly. 90% of the Jeep population wouldn't know the difference if they drove two Jeeps back to back that were exactly identical except for the gears. I believe that's the point that was being made. Add in the OP is asking about 35s on a diesel... I can tell you from experience, re-rear is NOT needed.

How was your experience with 35s and 3.73?

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[CrazyCooter]

OK now for the relevant input......

35's bolt on and will only improve the gears for the diesel. I absolutly loved my 37's with the 3.73's until I towed really heavy into the wind. Should you plan on doing at least a leveling kit, I would recomend just getting the 37's.

 

[shokker70]

How was your experience with 35s and 3.73?

Think I covered that. Mentioned it didn't hit 8th as often as I'd hoped. Even another response above mentioned shift points, can even agree with that. But to call it utter trash? Nah.

But I've also had 35s with 4.10s in my Mojave. I'd say I was disappointed in how minor any differences were. It was one of the factors in deciding on the Mojave. It shouldn't have been.

 

[Jeepasaurus_Rex]

The passive-aggressive intensity in this thread is unreal haha.

Anyhow...IF the OP ever comes back in...I hope that he found some of the information in here helpful.
As someone stated earlier, I also agree that the "need" or "want" for re-gearing is completely subjective. I personally think it just depends on what you do with your vehicle, how you drive, elevation, gear, and all of that... that's what really factors into if you "should" re-gear or not.

I have a thiccc ol' rear end on this girl with lots and lots of weight, super not-aerodynamic (is there a word for that?), and on 40's with stock 3.73 gears. I don't feel like I "need" to re-gear.

I likely will though, but most likely only to 4.10s. When I ran 37's on my previous diesel JT with a similar setup, I never would have re-geared... it felt perfect for me and what I do.

 

[Rusty PW]

Wish you bunch of gas sniffers would stay out of a diesel discussion.

My Power Wagon came stock with 4.56 gears and 33" tires. Going from 33's to 35's to 37's. I could feel the difference. Used a custom tune to recal the tranny shift points and speedometer.

 

[kevman65]

Wish you bunch of gas sniffers would stay out of a diesel discussion.

My Power Wagon came stock with 4.56 gears and 33" tires. Going from 33's to 35's to 37's. I could feel the difference. Used a custom tune to recal the tranny shift points and speedometer.

Some of us gas sniffers drove diesels when they were real diesels. Believe it or not the information sticks around long after retiring the last oil burner.

 

[Wheelin98TJ]

Think I covered that. Mentioned it didn't hit 8th as often as I'd hoped. Even another response above mentioned shift points, can even agree with that. But to call it utter trash? Nah.

But I've also had 35s with 4.10s in my Mojave. I'd say I was disappointed in how minor any differences were. It was one of the factors in deciding on the Mojave. It shouldn't have been.

If you are willing to put up with the compromises of running too high of a gear ratio, you do not need to regear.

Is that better than saying you should regear?

 

[Rusty PW]

Some of us gas sniffers drove diesels when they were real diesels. Believe it or not the information sticks around long after retiring the last oil burner.

When OP is talking about diesel regearing. A gas sniffer comes in about what he thinks is the right hearing for a 3.6 with 35 or 37 tires is apples to oranges..

 

[kevman65]

When OP is talking about diesel regearing. A gas sniffer comes in about what he thinks is the right hearing for a 3.6 with 35 or 37 tires is apples to oranges..

Yes, and here I am helping and I haven't had a diesel since my 2003 F250. I had it deleted and purged to get rid of the crap on the 6.0 and things got worse in the industry from there.
I won't touch a newer diesel. If anything I'd like to go backwards and get the 7.3 Excursion.

But, when it comes to tires and such, you go bigger it affects certain things no matter what your power plant is, just affects diesels less than gassers.

 

[BuyHold]

I THINK I SPEAK FOR EVERYONE WHEN I ASK YOU BOTH TO TAKE YOUR PISSING CONTEST SOMEWHERE ELSE. SERIOUSLY. THANKS.

I typically view ALL CAPS posts as an indication that the author never evolved from 1990s AOL/hotmail email-chain era of humanity. However, in this instance, I wholeheartedly agree that the use here is fully and 100% appropriate. THANK YOU!

 

[shokker70]

Wish you bunch of gas sniffers would stay out of a diesel discussion.

My Power Wagon came stock with 4.56 gears and 33" tires. Going from 33's to 35's to 37's. I could feel the difference. Used a custom tune to recal the tranny shift points and speedometer.

Ok, that's kinda funny. I'm no longer a gas sniffer though. 800 miles on my 3.0 and loving every second of it so far.

 

[shokker70]

If you are willing to put up with the compromises of running too high of a gear ratio, you do not need to regear.

Is that better than saying you should regear?

Not really. But I will agree with what others have said. This thread is/was about a diesel. Kinda makes it a moot point, at least for this thread.

Think we can all agree on it being somewhat subjective? If you're truly rock crawling on the weekends, maybe its 100% necessary to re-gear. Every day driving to work and back? Probably not so much. I simply take issue with someone telling others they must or at least strongly suggest a re-gear for 35s on 3.73. Have no numbers to back it up, but I'd bet a majority don't. 37s or 40s? Maybe a different discussion, but still not an absolute.

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