PDA

View Full Version : Gear ratio for 35's



JordanFoote86
10-27-2015, 06:03 PM
Hello I was wondering if people have any help for me when choosing what ratio to go for.
I've been told that a 4.88 while be a good all rounder?!

JakeJK
10-27-2015, 06:06 PM
Hello I was wondering if people have any help for me when choosing what ratio to go for.
I've been told that a 4.88 while be a good all rounder?!

I think with a 3.6 and 35s either 4.56 or 4.88 would be good

MR.Ty
10-27-2015, 06:07 PM
Hello I was wondering if people have any help for me when choosing what ratio to go for.
I've been told that a 4.88 while be a good all rounder?!

If you plan on sticking with 35s, 4.88 is a good ratio to go with.

JordanFoote86
10-27-2015, 06:10 PM
Ok thank you, for the foreseeable future I will be running 35's.
Thanks for the advice guys [emoji106]🏻

YellowJK
10-27-2015, 06:13 PM
3.6 is 4.56 with 35's. 4.88 with 37's.

With 4.88 on 35's you're over 3k cruising on the freeway at 70.

JordanFoote86
10-27-2015, 06:14 PM
If you plan on sticking with 35s, 4.88 is a good ratio to go with.

Also do you know if this is an easy enough job to do at home, or is specialist equipment needed?

JakeJK
10-27-2015, 06:16 PM
Also do you know if this is an easy enough job to do at home, or is specialist equipment needed?

Definitely have a reputable shop do it, it's extremely easy to screw up if you don't know what your doing and could destroy everything in there if done incorrectly. I mean unless you're an experienced mechanic and know how do it of course

WJCO
10-27-2015, 06:20 PM
Also do you know if this is an easy enough job to do at home, or is specialist equipment needed?

Based on your question, have a shop do it. Nothing personal, but it is a very specialized job with special tools. If you do want to know what's involved in it though, there are many youtube videos on it. Might as well change bearings with a master overhaul kit while you're in there.

JordanFoote86
10-27-2015, 06:32 PM
Ok thank you I will try to find somewhere to do it. It's not easy to find specialists in Saudi Arabia I will have to travel around the GCC.

JakeJK
10-27-2015, 06:35 PM
Ok thank you I will try to find somewhere to do it. It's not easy to find specialists in Saudi Arabia I will have to travel around the GCC.

Haha I could assume it would be hard to find somewhere in Saudi Arabia

longhorn1045
10-27-2015, 07:07 PM
Hello I was wondering if people have any help for me when choosing what ratio to go for.
I've been told that a 4.88 while be a good all rounder?!

Thank y'all for the info I was just about to ask this very question.

Jk909
10-27-2015, 08:28 PM
I would go with 4.56. I did 4.88 and I'm at 3200 rpm's when traveling at 75 mph. It's a little too deep for a vehicle that isn't wheeled all the time however it is really nice when in 4wd or towing my boat

Jeep2010
10-28-2015, 11:15 AM
I did 4.88 gearing for mine with 35s and I love it. Highway is 3k or under. Too scared to go fast enough to go over 3k rpm haha. I like the rocks off roading and I idle over many obstacles.

RUBICON7313
10-28-2015, 11:26 AM
I left mine stock 4:10 in and it's pulling 2800 at 70. Pulls great.

zx6r
10-28-2015, 10:45 PM
i love my 4.88's and 35's. great combo, great crawl and the rpm's are fine at highway speeds contrary to many others opinions

Mtb275
10-28-2015, 11:05 PM
I think with a 3.6 and 35s either 4.56 or 4.88 would be good


If you plan on sticking with 35s, 4.88 is a good ratio to go with.

Does it matter if it is Auto or Manual?

MR.Ty
10-28-2015, 11:08 PM
Does it matter if it is Auto or Manual?

A little. This gearing chart shows that there is an RPM difference with the different transmissions.

MR.Ty
10-28-2015, 11:09 PM
Does it matter if it is Auto or Manual?

Forgot the damn pic
171466

Mtb275
10-28-2015, 11:16 PM
Forgot the damn pic
171466

Great chart. Mine is the 3.8 and manual. Not trying to high jack he thread, but i did, and since i did, would you have those charts handy for the 3.8?

MR.Ty
10-28-2015, 11:39 PM
Great chart. Mine is the 3.8 and manual. Not trying to high jack he thread, but i did, and since i did, would you have those charts handy for the 3.8?

Yup. Here it is.
171469

Mtb275
10-28-2015, 11:44 PM
Cool! Thank you

CarolinaJK
10-29-2015, 12:05 AM
So I have an auto 3.6 and I'm about to move up to 35's. I have 3.73 gears. According to the chart I should be fine right until I can regear (about a year)? Bad for the trans?

MR.Ty
10-29-2015, 12:14 AM
So I have an auto 3.6 and I'm about to move up to 35's. I have 3.73 gears. According to the chart I should be fine right until I can regear (about a year)? Bad for the trans?

You'll feel a loss of power with the larger tires but it isn't bad for your trans. Don't forget the programmer to adjust your spedo and your shift points if you have an auto.

CarolinaJK
10-29-2015, 12:21 AM
You'll feel a loss of power with the larger tires but it isn't bad for your trans. Don't forget the programmer to adjust your spedo and your shift points if you have an auto.

Thanks for the advice! Glad to hear that! [emoji106]

JordanFoote86
11-18-2015, 05:10 PM
Thanks for the charts would you advise going for a ratio in the green or blue if it's a daily driver and gets chucked around the desert on a weekly basis?

cozdude
11-18-2015, 05:29 PM
Thanks for the charts would you advise going for a ratio in the green or blue if it's a daily driver and gets chucked around the desert on a weekly basis?

I would shoot for the high green/low blue area.

BertaNation
11-18-2015, 05:35 PM
I run 488 on my 15 jku w auto trans on 35s
3100-3300rpm @75mph
Imo 456 may have been a better choice but I am happy

hawklee
11-19-2015, 02:53 AM
You'll feel a loss of power with the larger tires but it isn't bad for your trans. Don't forget the programmer to adjust your spedo and your shift points if you have an auto.

regarding the programmer..i know adjusting tire size will adjust the speedo, will it also adjust shift points or is that something else that has to be manually adjusted?

hawklee
11-21-2015, 12:52 AM
regarding the programmer..i know adjusting tire size will adjust the speedo, will it also adjust shift points or is that something else that has to be manually adjusted?

bump5678910

cozdude
11-21-2015, 01:03 AM
bump5678910

Yes when you change your tire size it will correct your shift points

Coop
11-21-2015, 01:55 AM
Make sure you take your programmer with you to the shop when you pick the jeep up! Otherwise the jeep will be very unhappy and go into limp mode! Made that mistake! Lol!

JordanFoote86
12-16-2015, 07:42 AM
Yes don't worry I will be taking my programmer haha.

I have decided to go with the 4.56 was advices it will be best by the tuning shop that I am going to get the work done in

SmokinV10
12-17-2015, 03:09 AM
4:88 is a MUCH better gear ratio with 35's. I had 4:88's with my 35's and felt it was perfect. when I switched to 37's the jeep felt sluggish.

RoughRider
12-17-2015, 04:33 AM
So I know this question has been asked a billion times but why not once more

I'm changing gears soon and have 35s
It's mainly a daily driver and am wondering if 4.56 will be better than 4.88

Heholua
12-17-2015, 04:45 AM
So I know this question has been asked a billion times but why not once more

I'm changing gears soon and have 35s
It's mainly a daily driver and am wondering if 4.56 will be better than 4.88

With the manual transmission, 4.56s and 35s would be fine. If you had and automatic, I would suggest 4.88s.

RoughRider
12-17-2015, 05:13 AM
With the manual transmission, 4.56s and 35s would be fine. If you had and automatic, I would suggest 4.88s.

What's the difference if you don't mind me asking

mds22
12-17-2015, 11:44 AM
What's the difference if you don't mind me asking

You get to choose what gear you are in. Can get away with a higher ratio by manually selecting(or staying in) a lower gear when needed. However on the highway you get the benefit of the 4.56 and lower rpms

mudmobeeler
12-17-2015, 01:55 PM
I have the factory 4.10s in my 2014 with an automatic and run 35s, I love it. I think it depends on your actual driving terrain also. For me a 4.56 or 4.88 and 35s would have my jeep around that 3k RPM mark at 75 MPH and I don't like that. I was between 2700 and 3000 on the factory 32s when running 75 on the highway. Sounded like it needed another gear all the time. So for me the 4.10s work great with 35s. It still gets up and runs, goes 75-80 down the highway, and will chirp a tire (barely) if you punch it.

However, when we went to Colorado and traveled between Durango, Silverton, etc. I was wishing for a deeper gear. In the mountains on the highway it was trying to stay in 2nd gear to keep speed. So if I were to move to Colorado and stayed on 35s I think I would definitely look at the 4.56s or 4.88s. Up on the passes in 4x4 it done great. It just struggled on the highway.

JordanFoote86
01-20-2016, 07:40 AM
I went with the 4.56 Ratio and it is a great drive now on the road.
Doing some off-road testing this weekend but I expect it to work a treat!!

kfchris
01-20-2016, 01:09 PM
I have the factory 4.10s in my 2014 with an automatic and run 35s, I love it. I think it depends on your actual driving terrain also. For me a 4.56 or 4.88 and 35s would have my jeep around that 3k RPM mark at 75 MPH and I don't like that. I was between 2700 and 3000 on the factory 32s when running 75 on the highway. Sounded like it needed another gear all the time. So for me the 4.10s work great with 35s. It still gets up and runs, goes 75-80 down the highway, and will chirp a tire (barely) if you punch it.

However, when we went to Colorado and traveled between Durango, Silverton, etc. I was wishing for a deeper gear. In the mountains on the highway it was trying to stay in 2nd gear to keep speed. So if I were to move to Colorado and stayed on 35s I think I would definitely look at the 4.56s or 4.88s. Up on the passes in 4x4 it done great. It just struggled on the highway.

I have a 2012 with 3.73 gears. I think with the swap to 35's I'll be "ok" but I've been seeing some gents put up stock 4.10 gear sets that i've thought about snagging up. low mile gears that were installed by the factory are probably just fine as long as they weren't torched. Living in the Charlotte area I don't see much mountains and I can deal with the sluggishness when I do. Also have an auto (not by choice I was limited by selection at time of purchase) and thought that the 35's with 4.10 ratio would be good. Thanks for the confirmation!

BertaNation
01-20-2016, 02:50 PM
I have a 2012 with 3.73 gears. I think with the swap to 35's I'll be "ok" but I've been seeing some gents put up stock 4.10 gear sets that i've thought about snagging up. low mile gears that were installed by the factory are probably just fine as long as they weren't torched. Living in the Charlotte area I don't see much mountains and I can deal with the sluggishness when I do. Also have an auto (not by choice I was limited by selection at time of purchase) and thought that the 35's with 4.10 ratio would be good. Thanks for the confirmation!

I personally wouldn't go from 373 to 410.
The gains are minimal compared to the cost. My suggestion is if ur gonna have it done and plan to stay at 35s then at least go to 456.
I run 35s and 488. IMO 456 would have been the better choice. 15 jku auto trans

GraniteCrystal
01-20-2016, 02:59 PM
I personally wouldn't go from 373 to 410.
The gains are minimal compared to the cost. My suggestion is if ur gonna have it done and plan to stay at 35s then at least go to 456.
I run 35s and 488. IMO 456 would have been the better choice. 15 jku auto trans

I'm looking to go to 4.88 on 35s with auto transmission. What makes you wish you had done 4.56?

coop9779
01-20-2016, 08:25 PM
I'm running 4.56 with 35's and power is good. Runs 2900 rpm at 75. I'm running nitto trail grapplers and a heavy beadlock wheel. Not as much power as stock but it's ok. I wouldn't go any deeper on gear ratio because of the high rpm on the hwy. thinking about a supercharger...