Tire sizes

[SwolebaFett]

Looking at going up from 255/75/17 on my ‘21 Willys but not making modifications to suspension or anything. What would be a recommended size up? 265/80/17? Or bigger?

Sponsored

 

[LouisvEarlleJT]

285/75/R17

 

[cuteangel1007]

From what I’ve learned and been told so far, gearing is important when considering different tire sizes.
I have a Rubicon with 4.10 gears, I am able to go up from 285/70/17 to 315/70/17 without regearing. If I go larger, towards 37” wheels, I will need to regear.
When driving on the highway and the jeep can’t decide which gear to be in, especially on an uphill, where it keeps switching up and down to maintain speed, then you need to regear.
I just got my 35”s (315/70/17)put on yesterday and I LOVE them!

Anyone else have the same opinion?
Michellee
Cooper Discoverer A/T

 

[SwolebaFett]

Thank you for the information!

 

[SwolebaFett]

285/75/R17

And going up to this won’t give death wobble or anything, because I’ve heard that could happen.

 

[LouisvEarlleJT]

And going up to this won’t give death wobble or anything, because I’ve heard that could happen.

Death wobble happens with any tire size on a straight axle front end when components are loose or starting to wear. Larger tires can cause steering and suspension items to wear faster.

 

[Gladiatorx2]

I have had 35's with 4.10's which were very light ( 52-54lbs ) and 37's that were fairly heavy ( 74-78lbs). The overall driving experience was better with the 35's, as was the fuel economy ( 1-2 mpg better ). Currently on 37's with 3.5 lift and the even appear small on the Rubicon.

 

[djthumper]

Looking at going up from 255/75/17 on my ‘21 Willys but not making modifications to suspension or anything. What would be a recommended size up? 265/80/17? Or bigger?

Did you down size your tires? I thought the Willy's came with 285/70/17 stock like Rubicons.

From what I’ve learned and been told so far, gearing is important when considering different tire sizes.
I have a Rubicon with 4.10 gears, I am able to go up from 285/70/17 to 315/70/17 without regearing. If I go larger, towards 37” wheels, I will need to regear.
When driving on the highway and the jeep can’t decide which gear to be in, especially on an uphill, where it keeps switching up and down to maintain speed, then you need to regear.
I just got my 35”s (315/70/17)put on yesterday and I LOVE them!

Anyone else have the same opinion?
Michellee
Cooper Discoverer A/T

The largest thing that you need to do is to change the tire size in the computer. This effects your shift point. Guys go up to 37s on Rubicons all of the time without regearing right away.

 

[LouisvEarlleJT]

Willys has 255’s, a 32” mud terrain. Not sure why they didn’t just put them out with 285’s

 

[Chasm]

Someone on here posted this neat calculator recently.
Not exact obviously, as compared to checking your specific tire manufacturer, but useful.

https://tiresize.com/wheel-offset-calculator/

 

[cuteangel1007]

The largest thing that you need to do is to change the tire size in the computer. This effects your shift point. Guys go up to 37s on Rubicons all of the time without regearing right away.
[/QUOTE]

How does one change the tire size in the computer? That’s a new one for me.
thanks for the info, I am always looking to learn. (I need it!! )
Michellee

 

[djthumper]

The largest thing that you need to do is to change the tire size in the computer. This effects your shift point. Guys go up to 37s on Rubicons all of the time without regearing right away.


How does one change the tire size in the computer? That’s a new one for me.
thanks for the info, I am always looking to learn. (I need it!! )
Michellee

You either need a tazer or to use JScan. https://www.zautomotive.com/products/z_tzr_jlm

 

[cuteangel1007]

You either need a tazer or to use JScan. https://www.zautomotive.com/products/z_tzr_jlm

Thank you. I was at a mechanic shop earlier today and I asked the guy how to remove the safety feature that stops the vehicle moving when the door is open, he said “tazer”. So I guess Imma need ta get one.

 

[Chasm]

how to remove the safety feature that stops the vehicle moving when the door is open

Is it only 24/25 that they added the override?

 

[LouisvEarlleJT]

Is it only 24/25 that they added the override?

my 23 doesn’t have an override, so probably?

Sponsored