Help needed on going to smaller tires

[GabeBoyTheGreat]

That's not an issue. I am looking for ride quality, less road noise, towing and mpgs

Personally, I would stick with the same size tires but get a 2nd set of lightweight all seasons. That will accomplish your goal. I don’t see much benefit in going with a smaller diameter because you have 4.56 gears. Maybe smaller width, but keep the same diameter.

Bottom line, best way to achieve your goal is to get all season tires. The size of the tires is less relevant (unless you were regearing to the smaller size).

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[Fleeclan]

Personally, I would stick with the same size tires but get a 2nd set of lightweight all seasons. That will accomplish your goal. I don’t see much benefit in going with a smaller diameter because you have 4.56 gears. Maybe smaller width, but keep the same diameter.

Bottom line, best way to achieve your goal is to get all season tires. The size of the tires is less relevant (unless you were regearing to the smaller size).

I agree, throw a set of Cooper H/T or if you have money to burn, a set of Michelin LTX on it and that will give you the best mpg, least road noise and smoothest ride you can hope to achieve. Cooper H/T at Walmart right now run about 150$ per tire and seem to be a great highway tire. I run them on my 2015 F150 crew cab.

 

[Ratbert]

That's not an issue. I am looking for ride quality, less road noise, towing and mpgs

You're reducing sidewall height once by increasing wheel diameter, then again by reducing tire diameter.

That significantly reduced sidewall height will be felt in your kidneys. Maybe not significantly, but in the opposite way of what you want.

 

[Terrymo]

Unless you already have the smaller tires and wheels, this seems like a lot for a two week vacation.

 

[Twisted10]

i hate it when she wishes it was smaller

 

[Mocopo]

"I'm going to change it from stock and expect it to drive better."

Sure.

Best and cheapest option: sleep in the bed you made.

 

[MEGAS]

I just picked up a 2025 Rubicon X with the 35" tire package and 456 rear end.

Background to my question: We are going on a 2 week vacation with our camper and staying on paved roads and camp sites.

If I put on 255/70-18 wheels vs. the 315/70-17 what impact will this have on transmission and differentials? Excessive heat? Wear?

Thanks

Bill

Why the downgrade? You're all good as is. Is this the first step in an angry grill makeover?

 

[grimmjeeper]

That's not an issue. I am looking for ride quality, less road noise, towing and mpgs

You're in for disappointment, sorry to say.

 

[jadmt]

You're reducing sidewall height once by increasing wheel diameter, then again by reducing tire diameter.

That significantly reduced sidewall height will be felt in your kidneys. Maybe not significantly, but in the opposite way of what you want.

those are stock Sahara wheel/tire sizes....I don't think his kidneys are going to complain....

 

[grimmjeeper]

those are stock Sahara wheel/tire sizes....I don't think his kidneys are going to complain....

Depends on how used to the taller sidewalls his kidneys had become. And how much stiffer the other tires really are by comparison.

 

[Bcsnave]

Why the downgrade? You're all good as is. Is this the first step in an angry grill makeover?

Read the original post ..it's only for 2 week trips...then the KO2's go back on

 

[Ratbert]

Depends on how used to the taller sidewalls his kidneys had become. And how much stiffer the other tires really are by comparison.

Yep. His goal is apparently comfort, but that's not gonna do it.

And, of course, those tires will look pretty (fill in an appropriate derogatory term) on an X that's lifted for 35s.

 

[Wbino]

Hate to disappoint, you bought the wrong vehicle. It’s not going to get any quieter with different tires. Towing and mpg will be nearly the same.

That’s not true a all terrain tire will be much quieter than a mud tire.
I hear Jeeps all the time that sound like they have a flat tire with tires that are meant for off road but on pavement are loud.

 

[Ratbert]

Read the original post ..it's only for 2 week trips...then the KO2's go back on

Oh, it wasn't obvious (at all) that you were doing it temporarily. That doesn't really change anything other than it being perceived to be even more of a waste.

Shortened sidewalls (larger wheels AND smaller tires) will not be more comfortable unless they're specifically designed for that characteristic.

You won't have excessive heat or wear on your transmission or diffs, but your transmission won't shift where it should and will possibly bog down on hills (the opposite of what typically happens when people don't hit 8th after increasing tire size). Ideally you'd deal with that by setting the computer to match the new tire diameter, but that's pretty pointless for a two week trip.

 

[Camaroboi13]

That’s not true a all terrain tire will be much quieter than a mud tire.
I hear Jeeps all the time that sound like they have a flat tire with tires that are meant for off road but on pavement are loud.

Those tires have not been properly balanced, that’s why you hear them. Also, the OP has all terrain tires currently, so it wouldn’t get any quieter unless he put mini van tires on it.

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