Would you regear

[BHoch]

My Jeep is the 2023 Willy’s package. I’ve added the 1.5” Tera flex front level and 285/75/17 Toyo’s on 17” KMC lobos. The lobos have a +18 offset. Which is perfect for what I wanted.
I still see 8th. But it has to be seriously flat or slightly down hill. I lost between 1.5 and 2 mpg. Also the do notice a little slower pulling out. Or passing someone. Was thinking to regear from the stock 3.73 to the 4.56 gear ratio. Note I’m in central Texas so speed limits are usually 65 and usually higher going most places. Of note the shop did a great job and working with them has been great in sorting out the look I was trying to get. I’ll gladly have h them do the regear. So the question is would you regear to see 8th more and get back to similar to stock feel?

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[bleda2002]

You'll get more pep but no improvement in mileage. For 33.5s I'd not bother personally.

 

[Vincent]

I have basically the same setup, sport s, 3.73 gears, TF 1.5” front/.75” rear. Pedal Commander for the win regarding more pep. If you’re wanting more 8th gear, gonna have to pull the trigger on the re-gear.

 

[JTenn]

My Willys is similar in setup except I also have a 2" Mopar lift and Rubicon axles front and rear. My wheels however are only a +1 offset. I regeared to 5.13's and am soooo glad I did. Now I can (and will) move up to 37's on my next set of tires. Here is my post with real speeds and rpms after the regear if it helps any. You will get wildly differing opinions regarding your question though so be prepared for that. If 8th gear is your goal then absolutely you should regear. Just try to plan for future mods while making your final decision.

https://www.jeepgladiatorforum.com/forum/threads/5-13-gears-my-thoughts-and-real-numbers.68332/

 

[Panthers65]

if you are never planning on going any bigger, keep an eye out for a set of max tow or rubicon axles. Will come with the 4.10's which are great for 33's, and you'll get some traction control too (max tow has a L/S rear, the rubicon's have e-lockers)

you'd be far better off with the traction devices off-road.

 

[Gazingwa]

I have 285/75/17 on my gas Overland. Regeared to 4.56 with Tru Tracs and the difference in the truck is very noticeable. Drives better (more pep, less hunting) little better mileage (not enough to pay for the upgrade though).
To me it was worth it. Feels better than it was stock(32”/3.73) and the way the truck should have acted from the factory.

 

[AverageJoe]

I, too, have a Willys with 285/75r17's. Mine acts as yours does, though I haven't noticed any perceptible loss of power. MPG is around 18.5 combined city and highway. It does up-and-down shift between 6th, 7th, and 8th gear a lot! But I noticed before I went to larger tires that it did the same with the factory 32's. I'm beginning to think that, with so many forward gears available, the constant shifting may not be a bad thing. Once I've reached cruising speed mine likes to run at between 1500 and 2000 rpm and it hunts for the gear that will keep it there. I keep reminding myself that these are not the 3 speed autos that I grew up with.

I will also add that I think we've selected the largest tire size that we should use for 3.73 gearing. We are on the ragged edge! Anything larger, and I would go to 4.10's.

Just my opinion.

 

[Stormtroopin]

If you regear definitely consider adding a locker

 

[49Gramps]

I have 34s on an Overland. I regeared to 4.56 a couple of months ago and am very pleased with the performance improvement. Mileage is good, recent trip to WV and back (915 miles) netted an overall 20.5 mpg.

 

[BHoch]

Thanks all for your posts. Been talking with others as well. Going to talk with munsnoo and get prices and set up a time. Probably right thing to do.

 

[LouisvEarlleJT]

I wouldn’t, unless the plan was to eventually get 37’s or something.

 

[Fastwake]

I wouldn’t, unless the plan was to eventually get 37’s or something.

I agree

 

[Dick]

Those wheels are trick. ?

 

[Badunit]

If money is not an object, I would so it doesn't hunt/shift so much. I've had my JT only a short while but it appears it needs to be at 2000+ rpm to have enough torque to minimize excessive shifting at highway speeds. Mine is a Rubicon with auto and 4.10, totally stock. 8th gear is too tall at 55mph, 7th is good at 55mpg, but 7th is too low at 80mph. I need a 7.5. I was hoping using manual mode to lock out 8th would let it shift 1-7 like normal but it does not work that way unfortunately.

If you haven't done so already, pay attention to the RPMs out on the highway and find out where you want it to be for performance and to minimize shifting, without winding it out. It is probably going to be a compromise between too low RPM at 55 and more than you need at 80. When you have it figured out you can calculate what gear ratio you really want. It is too much money to do it twice.

On the subject of economy, I don't know if higher rpm and holding a gear is better or worse for economy than it lugging in a higher gear and shifting a lot. I'd think it would be better all around, though, if it could use all 8 gears properly and it sounds like yours is not able to.

 

[Pescatoral Pursuit]

My Jeep is the 2023 Willy’s package. I’ve added the 1.5” Tera flex front level and 285/75/17 Toyo’s on 17” KMC lobos. The lobos have a +18 offset. Which is perfect for what I wanted.
I still see 8th. But it has to be seriously flat or slightly down hill. I lost between 1.5 and 2 mpg. Also the do notice a little slower pulling out. Or passing someone. Was thinking to regear from the stock 3.73 to the 4.56 gear ratio. Note I’m in central Texas so speed limits are usually 65 and usually higher going most places. Of note the shop did a great job and working with them has been great in sorting out the look I was trying to get. I’ll gladly have h them do the regear. So the question is would you regear to see 8th more and get back to similar to stock feel?

(Not necessarily directed at the OP, but the general sentiment on this board.)
Unless someone can explain to me, the necessity of driving in 8th gear constantly at highway speeds as long as the RPMs are where they should be, is necessary for transmission health, what is the problem?

By my reckoning, as effective gear ratio is affected by tire size, it is more important during takeoff and acceleration, not running speed.

As the effective gear ratio goes down with larger tires, there is more strain being put on the driveline during acceleration and especially acceleration from a stop.

If anything, not seeing 8th gear at highway speeds of 60-65mph or more on flat ground is an indication that more gear ratio is needed for acceleration, but itself is not an issue.

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