37" Tires non-Rubicon diesel

[ScottLars]

Has anyone ran with 37" tires on a non Rubicon 3.0L diesel? Specifically with the stock 3.73 gearing. If so, how did it perform both on and off-road?

Sponsored

 

[FitfulGoat]

You will get a wide range of subjective input on this topic.

It may be worth mentioning the type of terrain and general use you will have with the truck.

Mall crawling - you’re likely fine but you will notice a decline in acceleration and performance.

Moderate to heavy off-roading or lot’s of highway driving and hills or at high altitude - re-gearing is highly recommended.

 

[ScottLars]

You will get a wide range of subjective input on this topic.

It may be worth mentioning the type of terrain and general use you will have with the truck.

Mall crawling - you’re likely fine but you will notice a decline in acceleration and performance.

Moderate to heavy off-roading or lot’s of highway driving and hills or at high altitude - re-gearing is highly recommended.

Daily driver around small town and weekend trail rides in hilly Kentucky.

 

[Deleted member 22728]

It'll basically be like having 2.73 gears; gear spacing is stretched-out to the point where 7-8 will rarely be seen unless going downhill.

 

[CerOf]

Has anyone ran with 37" tires on a non Rubicon 3.0L diesel? Specifically with the stock 3.73 gearing. If so, how did it perform both on and off-road?

All diesels have 3.73, even the Rubicon.

 

[kooltoys]

I cant see it being that big a deal other then MPG! Im running 35's and have a lead foot. Im looking for 37"-38" currently. I have added a peddle commander and bank tuner but keep the settings turned down.

 

[TheSolarWizard]

I think it depends on your goals for the Jeep and habits And also the weight of your Jeep and especially the wheels and tires you are running.

I see 7th and 8th all the time. Locking the trans in first + 4 low also gives a very usable range of speeds off road.

all that being said, if you tow a lot get 4.30s or 4.56 put in and do lockers while you’re in there

this is with 39s on stock gearing. Truck is happy at 1600rpm in 8th

 

[Chance575]

Yup 6000 miles on my 37s and no problems, then again my 4.88s just showed. I plan on installing lockers and towing with it

 

[Deleted member 22728]

37/13.50/17 while towing a 28' Airstream up a 7 degree grade @ 4k feet...with 4.56 gears. 7th.

 

[Deleted member 22728]

After reaching home base. Gear/reagear? Let physics and the old lady be your guide.

 

[Dougstdig]

37/13.50/17 while towing a 28' Airstream up a 7 degree grade @ 4k feet...with 4.56 gears. 7th.

You forgot to add in the snow with your eyes closed while eating a sandwich…

 

[Deleted member 22728]

You forgot to add in the snow with your eyes closed while eating a sandwich…
[/QUOTE

You forgot to add in the snow with your eyes closed while eating a sandwich…

Go with a credit union next time.

 

[Nigelcorn]

Stock Willys ecodiesel on 37s. I honestly feel no need to regear. I have no issues maintaining 75mph in 8th, get good mileage (23-24) and it has no issues on Moab. Really, in 4 low, it idles up lot of the obstacles offroad.

I could feel a difference in acceleration when comparing mine on 37s to a stock Willys, but I have neverefelt any need to regear.

 

[Snazzelberrywillie]

Stock Willys ecodiesel on 37s. I honestly feel no need to regear. I have no issues maintaining 75mph in 8th, get good mileage (23-24) and it has no issues on Moab. Really, in 4 low, it idles up lot of the obstacles offroad.

I could feel a difference in acceleration when comparing mine on 37s to a stock Willys, but I have neverefelt any need to regear.

What lift do you have? Trying to figure out if 37s will fit with a mopar 2in lift

Sponsored