Called my dealer for a regear quote…

[ShastaJT6]

I feel wind drag is a bigger factor than weight.

Trailers with frontal area and roof racks are a killer. I can't even coast at the same speed own a 6% grade while towing my small RV without throttle input due to wind drag. My Peterbilt with a YJ on the deck towing my 37' 5th wheel always gained speed and it had much more frontal area.

The jump from 4.56 to 4.88 is only 5%,....about 100rpm, so it's not the end of the world if you gear lower. Also, aren't you living up in hill country at higher elevation?

You make some good points here. As for location, Im kindof all over the place right now - and will likely be relocating in the next year. Im more thinking "plan for the worst, hope for the best". Im leaning towards my gearing being a little overkill, but having it when I need it.

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[CrazyCooter]

You make some good points here. As for location, Im kindof all over the place right now - and will likely be relocating in the next year. I'm more thinking "plan for the worst, hope for the best". Im leaning towards my gearing being a little overkill, but having it when I need it.

Sounds like 4.88's on 35's is your overkill answer and then still OK on 37's should you plus size. The jump to 5.13's from 4.88's is only another 4.9%, so you could even tolerate that if your are thinking 37's at all........

My rule of thumb advice to clients for gas rigs is 10% change minimum to justify the costs of re-gearing. The diesel (Especially Cummins) guys 5-7% makes a much larger difference due to the narrow RPM band when torque is delivered.

 

[DocMike]

Mine was damn near this. With all the bearings etc....full kits and a lifetime warranty. They had a regear special over the summer.

So I’ve been shopping around for pricing on a regear. I called some local off-road shops that quoted me at $2300 OTD for parts and labor…I called my dealer for a quote and the technician said he’d have to call me back because he didn’t think I could regear because my differential is too small for 4:56 and 4:88…

My question is does this technician know what he’s talking about? I drive a JT Overland with stock 3:73’s. I know other members of this forum who drive a JTO and have regeared. I’m a newbie to gears, so any input would be appreciated. I’m currently on BFG 315/70/R17’s. I’m looking to get my MPG and power back. I do tow twice a year, but not far distances.

 

[ShastaJT6]

Sounds like 4.88's on 35's is your overkill answer and then still OK on 37's should you plus size. The jump to 5.13's from 4.88's is only another 4.9%, so you could even tolerate that if your are thinking 37's at all........

My rule of thumb advice to clients for gas rigs is 10% change minimum to justify the costs of re-gearing. The diesel (Especially Cummins) guys 5-7% makes a much larger difference due to the narrow RPM band when torque is delivered.

I appreciate the input here. I dont see 37`s in the future, I plan on sticking with the 35`s when i upgrade, but I think going a little overkill is still the move considering the weight of the vehicle with all the extras installed - once its loaded for a camping or hunting trip Im already at payload capacity pretty darn quick. Plus if I do decide to go to aftermarket wheels in the future it would help compensate for the weight, and id still be able to do some light towing without issue.

Now I just need to hurry up and wear out these stock 33s....

 

[TNBob2021]

I got a dealer quote for about $3000 for R&P with Labor

I went to very respected independent off-road/Jeep shop today..... And for not that much more... set up an appointment.... for R&P and e-locker and labor....

R&P was the same brand - Yukon.
chose to go with 4.56s.... they'll work just fine with my 315/70R/17 and maybe some day... some 35s.

 

[MOPAR Boy]

found this on exodus4x4.com. A shop that does a ton of gears.

found this on exodus4x4.com. A shop that does a ton of gears.

IMHO, this chart is not consistent with the new Jeep Wrangler Xtreme power train configuration.

The Wrangler Xtreme ships factory equipped with the 3.6 V6 + 8 spd tranny, and 315x70R17 tires, which are essentially 35 inch tires.

Note: the Xtreme ships with 4.56 gears, whereas this chart shows 4.88 gears.

 

[NewGladdyOWNR]

IMHO, this chart is not consistent with the new Jeep Wrangler Xtreme power train configuration.

The Wrangler Xtreme ships factory equipped with the 3.6 V6 + 8 spd tranny, and 315x70R17 tires, which are essentially 35 inch tires.

Note: the Xtreme ships with 4.56 gears, whereas this chart shows 4.88 gears.

I think chart is saying, if you're going to spend the money on regearing with a 35" tire, your money will go further by going to 4:88's..in the off-chance upgrading to 37's you'd be fine too.

 

[bleda2002]

IMHO, this chart is not consistent with the new Jeep Wrangler Xtreme power train configuration.

The Wrangler Xtreme ships factory equipped with the 3.6 V6 + 8 spd tranny, and 315x70R17 tires, which are essentially 35 inch tires.

Note: the Xtreme ships with 4.56 gears, whereas this chart shows 4.88 gears.

4.88 is the optional regear from the factory. 4.56 is the fuel efficient epa choice, but if 4.88's wouldnt work with factory tires they wouldnt offer it as an upgrade.

 

[Wheelin98TJ]

No reason not to go deep on gears with a 0.67:1 8th gear OD ratio and a V6 that doesn’t make a ton of power.

The next ratio lower is probably a good idea.

 

[Frank...]

IMHO, this chart is not consistent with the new Jeep Wrangler Xtreme power train configuration.

The Wrangler Xtreme ships factory equipped with the 3.6 V6 + 8 spd tranny, and 315x70R17 tires, which are essentially 35 inch tires.

Note: the Xtreme ships with 4.56 gears, whereas this chart shows 4.88 gears.

I don’t think that chart is from Jeep.

 

[Frank...]

Extreme recon package gets 4.56 with the auto transmission & 4.88 with the manual.

 

[Hootbro]

Exodus 4x4 knows their shit when it comes to gears and Jeeps. They are going to recommend what real world customers are looking for and intended use. Not what is a OEM balance between performance and mileage considerations with the latter having more sway.

 

[Gren71]

Exodus 4x4 knows their shit when it comes to gears and Jeeps. They are going to recommend what real world customers are looking for and intended use. Not what is a OEM balance between performance and mileage considerations with the latter having more sway.

awesome video!

makes me want to regear

 

[NewGladdyOWNR]

Exodus 4x4 knows their shit when it comes to gears and Jeeps. They are going to recommend what real world customers are looking for and intended use. Not what is a OEM balance between performance and mileage considerations with the latter having more sway.

Yea I’ve watched the video and browsed their website. That’s where I got the chart from, however he does contradict himself. He says in the video he recommends 4:56 on 35’s, but their chart says 4:88’s for 35’s. So again, still no clear cut answer which gear ratio is the best for 35’s. Lol

 

[MOPAR Boy]

4.88 is the optional regear from the factory. 4.56 is the fuel efficient epa choice, but if 4.88's wouldnt work with factory tires they wouldnt offer it as an upgrade.

Not sure what you mean by ‘4.88 is the optional regear from the factory.’ The 4.56 is the only factory gearing on the Wrangler Xtreme model.

Yes, you can buy aftermarket 4.88 gears from JPP Mopar parts, and have them installed by a mechanic in your existing axles, or you can buy the JPP Mopar entire 4.88 axle, and have it installed.

However, in both 4.88 scenarios, these are not ‘factory regear options,’ they are JPP aftermarket parts that you can have installed aftermarket, and see if you can get a dealer to do the installation work.

My point was the 4.56 is a true ‘factory option’ you can specify on a factory order for a new Wrangler, installed at the Jeep factory, of course, when your car is being built. Not so with 4.88, so I don’t get your point.

Exodus 4x4 knows their shit when it comes to gears and Jeeps. They are going to recommend what real world customers are looking for and intended use. Not what is a OEM balance between performance and mileage considerations with the latter having more sway.

He talks about gear break-in during the first 500 miles (e.g., drive 15 minutes, let it cool down, drive another 15 minutes, rinse, and repeat, like 6 times!). So, why doesn't the Jeep Owners Manual address this elaborate gear break-in procedure? After all, a newly delivered JT has pritnear zero break-in time.

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