Maximum tire size

[cswilliams75]

Great. Thank you for taking the time to help. Much appreciated.

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[Grayhound]

That is a bit wider than your stock setup.
Are you good with some poke?

 

[cswilliams75]

Yes. I actually ant a bit of a wider stance. Just didn’t want it to rub or have to change my suspension.

 

[Jamrock]

So we have a 2019 Sahara that is stock and time for tires is coming.

Wife wants the Black Rhino Primm (black with brass bolts).

I really want to know what the largest size tire I can run with the stock Sahara. I like how 37 look but not sure if I would need to make a lot of other upgrades first.

Tires we are looking at Patagonia Milestar 33x12.5 or 37x12.5.

Any knowledge on this is greatly appreciated!

This is how it begins. I only want to...

You do not appear to be a serious off-roader. Most likely, you use your Jeep on light to medium trails and bad rural roads.

I would not go higher than 35's on a non-Rubicon Jeep. If you go higher, you will need to make a number of modifications to facilitate the change.

With 35's you may need to increase the height of the Jeep a bit. You can use a 2 inch lift or change out the suspension for a Rubicon suspension.

You might also have to get different fenders. The the taller wheels may cause your tires to rub on the fenders on some trails.

If you only want to change the wheels and not do anything else, 33's would be a good choice.

Remember. This is how it starts. One modification leads to another and then to another.

Keep us posted on the changes.

 

[Johnny B]

Wouldn't a 35 or 37 require regearing also?

 

[Philly_]

Wouldn't a 35 or 37 require regearing also?

I definitely would, but you don’t necessarily have to. It will still function, but may not be as enjoyable as before.

I’ve found that the JL’s automatic transmission compensates quite well for larger tires, but you definitely need to reprogram the computer with a Tazer or Jscan to have the proper shift points. Also, one tire size up from factory is usually fine without a regear, but more than that, I think it’s worth it.

Which engine you have will also be a factor in determining proper gear set. The general consensus is that the 2.0T is great with 4.88’s and 37’s, whereas many with the 3.6L prefer 5.13’s with 37’s. There’s no 100% right answer and you’ll read a lot of different feedback on the forum.

I currently run 4.10’s with the 2.0T and 35’s, but 4.56 would definitely be best; however, it doesn’t bother me enough to justify the upgrade when I know I will go to 37’s when these wear out, and will want 4.88’s at that time. Gears are expensive enough that I think it makes the most sense to only do once for your end goal, rather than swapping with every tire change.

 

[Jamrock]

Wouldn't a 35 or 37 require regearing also?

Yes on 37's. Automatic on 35's, not required.

 

[Johnny B]

I definitely would, but you don’t necessarily have to. It will still function, but may not be as enjoyable as before.

I’ve found that the JL’s automatic transmission compensates quite well for larger tires, but you definitely need to reprogram the computer with a Tazer or Jscan to have the proper shift points. Also, one tire size up from factory is usually fine without a regear, but more than that, I think it’s worth it.

Which engine you have will also be a factor in determining proper gear set. The general consensus is that the 2.0T is great with 4.88’s and 37’s, whereas many with the 3.6L prefer 5.13’s with 37’s. There’s no 100% right answer and you’ll read a lot of different feedback on the forum.

I currently run 4.10’s with the 2.0T and 35’s, but 4.56 would definitely be best; however, it doesn’t bother me enough to justify the upgrade when I know I will go to 37’s when these wear out, and will want 4.88’s at that time. Gears are expensive enough that I think it makes the most sense to only do once for your end goal, rather than swapping with every tire change.

I'm like baby steps here. I went to 33's and called it a day. Skipped the reprogramming and regearing aspects all together. No mods to the suspension. Did have to update the spare tire carrier. lol But I'm still rolling with a daily driver that can do mild trails and beach stuff. See you this weekend!!

 

[Jamrock]

Don't forget better miles per gallon.

 

[AlbertDimas2q]

This is how it begins. I only want to...

You do not appear to be a serious off-roader. Most likely, you use your Jeep on light to medium trails and bad rural roads.

I would not go higher than 35's on a non-Rubicon Jeep. If you go higher, you will need to make a number of modifications to facilitate the change.

With 35's you may need to increase the height of the Jeep a bit. You can use a 2 inch lift or change out the suspension for a Rubicon suspension.

You might also have to get different fenders. The the taller wheels may cause your tires to rub on the fenders on some trails.

If you only want to change the wheels and not do anything else, 33's would be a good choice.

Remember. This is how it starts. One modification leads to another and then to another.

Keep us posted on the changes.

Sorry, I forgot to update I went with the KO2 35's. She does rub fenders at flex but not turns.

Needless to say a lift and steps are on the way for my wife.

We have property in texas now that we do some off-roading but not as much as when we lived in California for work.

 

[Jamrock]

I can see that there is not a whole lot of space between the tires and the fenders. The Rubicon fenders are higher than the Sport and Sahara ones. If you still have rubbing after the lift, you can consider those. Members sometimes sell new ones when they switch to after market fenders.

What wheels did you get? What offset?

 

[JINO]

I have 38s, but needed 3.5" lift for them to fit. And I still rub on full flex.

I don't recommend 37/38 for everyone, because of the upgrades involved, but damn does it look good!
When I air down to 10 psi, it feels like I'm floating along the trail.

 

[Jamrock]

The heart wants what the heart wants. If you like 38's, you will never be happy with anything less. As you have said, it is not for everyone.

What upgrades did you make to facilitate the 38's?

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