Here we go again - 3.73 with 35s - how bad is it really?

[Bjeepz]

Just do the tires you want! I ran 285/75r17 ( 34x11.5’ish ) with 3.73’s on my 2020 Overland. I had no complaints. I imagine you’re aware that most 35’s measure in closer to 34.5. They were Heavy AT3W’s. Your Jeep isn’t a race car so go for it! As for re-gearing it simply isn’t worth it or necessary for your use.
I run 37’s on 4.10’s, half if the internet says I will die for doing so an am an idiot, turns out they work just fine!

Sponsored

 

[smlobx]

It's getting to that time where I'm interested in doing another Jeep mod no my 22 Sport S.

I currently run Falken Wildpeak At3w's 285/70/17 with a Teraflex 1.5 level - but am looking to beef up the tires to a 35.

I do have the Sport S - so I have the 'dreaded' 3.73 gear ratio.

I'm not sure what 35in tire to go for at the moment, but it will NOT be the AT4w due to the weight. I would like to find something that is rated well, but not overly heavy....


Thanks!

I can’t comment on the gear ratio as I have a Rubicon but applaud you for noticing how HEAVY the Falkens are. They’re stupid heavy.

When it came to upgrading my overland build tires I also wanted 35’s and went with Toyo Open Country AT3’s in a 35x11.5R17 and according to Tire Rack are actually 2 pounds lighter per tire. A win win for me as I have them on my other truck and they are fantastic!

 

[PuddleJumper]

There are people who think the Ford 300 6 is the end all be all truck engine.

There are people who think their 6.0 LS in a 2500 tows fine.

There are people who think a 5500 isn't enough truck to do anything with.

There are people who insist they need to be able to tow a garrilion miles a day.

One persons fine is anothers no friggin way. Highly subjective. Toyota put 4.88's in 4runners that had factory 31's lol. TRX's have 3.55's with a 37.

You won't die in a fire, and tens of thousands of mall crawlers run the roads with similar set ups. You may not be happy, but you can always regear later.

fantastic way to put it

 

[ALT2870]

Thanks.

I've also been eyeing up the Toyo Open County At3, but holy moly - they are expensive!

They so worth it though. I have a set on a smaller vehicle and they are tanks. Excellent snow and wet condition tire. I have to tell myself to be careful sometimes they are that good. I have 35" Wildpeak AT3's on my Jeep now since they came with the truck but Toyo ATIII's are my next choice once the other are done.

I personally think you'd be happy with 33's and I like the advice of going to a tire shop and having them roll a 35 next to it and see if it makes you happy. Coming back to gears living in the low flatish lands you will probably be fine. Towing might be a bear sometimes...

 

[jmdwifi]

I did 35's and re-geared. I did notice the power difference but not so much that I would do it again. It was not that bad with 35's and 3.73. I did 4.56. I would do it again if I had 37's but not 35's. I have an automatic.

 

[Hemy5587]

I have 3.73s and started with 35s (BFG KM3s, E range 33.5-ish mounted 74 lbs per discount tire then went to Goodyear Wrangler Ultraterrains, E range 33.5-ish mounted 68lbs per discount tire) and now with 37s BFG K02s (C range 35.5-ish mounted, 64lbs per discount tire) and have zero regrets. I can bark them off the line and get 17.5 mpg cty/hwy 50/50 (was 15.5-16mpg avg doing the same daily drive w the 35s). I have an air intake, pulsar, pedal commander and afe twisted y pipe so maybe that is why I don't have any issues with not re-gearing but depending on what you read on the forum those mods are great or do minimal. Best advice would be try it and if you're happy then you're done, if you hate it you can always re-gear or go to a smaller tire but for me I am happy with my set up. Good luck!

 

[SamJ3]

I pondered this same question recently as I was upsizing the tires. While the Gladiator is very capable for most of the trails I run, I was longing for taller boots. Did a lot of research to select the tires, rims, and suspension. My top two tire choices where BFG All-terrain T/A K03 285/75R-17 (33.8") and Mickey Thompson Baja Boss A/T 255/75R-17 (34.6"). I decided to stick with the original rims and gearing on the taller tires to 'see how it goes', leaving open the option to regear if it is 'bad'.

Spoiler: it is not bad.

Drivetrain: 3.6L V6 (gas), 8-speed 850RE automatic transmission, 3.73:1 gearing
Before: Bridgestone Dueler A/T 245/75R-17, 31.5 inches diameter
After: Mickey Thompson Baja Boss A/T 255/85R-17, 34.6 inches diameter, 1.5 inch Teraflex leveler.

I am only a week into the new set up, but I can attest that normal on-road driving is negligibly impacted. Initial fuel economy seems unaffected. Note that I did immediately recalibrate the tire size using a Tazer, so the speedometer and MPG should be right (and I have verified the corrected velocity with a GPS). I am sure that aggressive and maximum acceleration (and braking) are negatively impacted - that is just physics. But, day-to-day driving is more than acceptable (so far).

I can update this post later, after a month of on-road and some off-road adventures. As for off-road, I might need to use 4L once in a while where 4H will do, but that is a small penalty. Future towing is limited to about 1,500 lbs., so that is not a concern either. As this point, I feel no urge to regear.

As has been said here, ultimately, you will be the judge.

 

[Bjeepz]

I pondered this same question recently as I was upsizing the tires. While the Gladiator is very capable for most of the trails I run, I was longing for taller boots. Did a lot of research to select the tires, rims, and suspension. My top two tire choices where BFG All-terrain T/A K03 285/75R-17 (33.8") and Mickey Thompson Baja Boss A/T 255/75R-17 (34.6"). I decided to stick with the original rims and gearing on the taller tires to 'see how it goes', leaving open the option to regear if it is 'bad'.

Spoiler: it is not bad.

Drivetrain: 3.6L V6 (gas), 8-speed 850RE automatic transmission, 3.73:1 gearing
Before: Bridgestone Dueler A/T 245/75R-17, 31.5 inches diameter
After: Mickey Thompson Baja Boss A/T 255/85R-17, 34.6 inches diameter, 1.5 inch Teraflex leveler.

I am only a week into the new set up, but I can attest that normal on-road driving is negligibly impacted. Initial fuel economy seems unaffected. Note that I did immediately recalibrate the tire size using a Tazer, so the speedometer and MPG should be right (and I have verified the corrected velocity with a GPS). I am sure that aggressive and maximum acceleration (and braking) are negatively impacted - that is just physics. But, day-to-day driving is more than acceptable (so far).

I can update this post later, after a month of on-road and some off-road adventures. As for off-road, I might need to use 4L once in a while where 4H will do, but that is a small penalty. Future towing is limited to about 1,500 lbs., so that is not a concern either. As this point, I feel no urge to regear.

As has been said here, ultimately, you will be the judge.

Slice those pizzas! I had hoped to get the NItto 37x11.5's for bigger pizzas but couldn't get them in my region of Canada at the time.

 

[XraytecH]

One drive from South San Francisco up to Roseville, CA was enough to get 4.88s a week later.

 

[arosen1997]

One drive from South San Francisco up to Roseville, CA was enough to get 4.88s a week later.

Idk how Yall are running 4.88s on 35s
Even 4.56s on 37s is slightly more gearing than the JT has stock for a sport

(31s/3.73s on left 37s/4.56 right)

 

[Trauma PA]

It's getting to that time where I'm interested in doing another Jeep mod no my 22 Sport S.

I currently run Falken Wildpeak At3w's 285/70/17 with a Teraflex 1.5 level - but am looking to beef up the tires to a 35.

I do have the Sport S - so I have the 'dreaded' 3.73 gear ratio.

I don't go off road. I live in Wisconsin and see rolling hills from time to time....

I use my JT as my DD - primarily driving to work and back (15mins).

I don't do any heavy hauling/towing - just the typical weekend camping / hunting trips,

I'm currently averaging about 18mpg with primarily city driving...

I'd like to know for those who have had 35s and 3.73 - how bad of an idea it would be to pursue a setup like this? I have the ability to recalibrate tire size into the JT computer. But how bad will it be in the city? How bad will it be on the freeway? I am not a speed demon nor do I have a heavy foot....

I'm not sure what 35in tire to go for at the moment, but it will NOT be the AT4w due to the weight. I would like to find something that is rated well, but not overly heavy....

I have read everything form the JT will be a "dog" to "fine" when searching through the forum. I'm sure it is an individualized judgement, but I'd like a little more clarity before dropping big moolah on tires....

Thanks!

Look at post #11 on my build thread and you will get my honest opinion.
https://www.jeepgladiatorforum.com/forum/threads/anvil-2024-willys-build.82293/#post-1354078

 

[Bjeepz]

Look at post #11 on my build thread and you will get my honest opinion.
https://www.jeepgladiatorforum.com/forum/threads/anvil-2024-willys-build.82293/#post-1354078

So a month later how are you feeling with the setup? Does it feel normal and just fine now?

 

[Vtur]

Idk how Yall are running 4.88s on 35s
Even 4.56s on 37s is slightly more gearing than the JT has stock for a sport

(31s/3.73s on left 37s/4.56 right)

Unsprung weights/mass.

 

[XraytecH]

Idk how Yall are running 4.88s on 35s
Even 4.56s on 37s is slightly more gearing than the JT has stock for a sport

(31s/3.73s on left 37s/4.56 right)

Did my due diligence and went with this.



35" x 3.75 ≈ 4.23
31"

In my case I'm overgeared with 4.88s ON PAPER. But on the road behind the wheel using my butt dyno, it feels like stock performance.

 

[PuddleJumper]

Idk how Yall are running 4.88s on 35s
Even 4.56s on 37s is slightly more gearing than the JT has stock for a sport

(31s/3.73s on left 37s/4.56 right)

rotating corner weight is usually the main reason people go deeper than what generally makes sense. if your turning over 100-110 ish lbs a corner, I've seen many go deep even for true to size 33s

Sponsored