Canit be done?

[wanderer]

Just buy 315 70 17 ( BFG ) actuallly 36.4 put them on stock wheels no lift no regear and drive it wheel it modestly.. I have to go over some low mtn passes at 3400 anf 4400 feet (the grapevine on I-5) >

is any one doing it this way is ? what are you experinces are you inthe slow lane wtching colorado and tacos pass you or is it liveable?

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[RidinDirty]

Just buy 315 70 17 ( BFG ) actuallly 36.4 put them on stock wheels no lift no regear and drive it wheel it modestly.. I have to go over some low mtn passes at 3400 anf 4400 feet (the grapevine on I-5) >

is any one doing it this way is ? what are you experinces are you inthe slow lane wtching colorado and tacos pass you or is it liveable?

37 for daily road driving is OK. Maybe light trails.

Gearing always helps but if you are thinking about it, you are going to do it.

 

[jjdustr340]

Just buy 315 70 17 ( BFG ) actuallly 36.4 put them on stock wheels no lift no regear and drive it wheel it modestly.. I have to go over some low mtn passes at 3400 anf 4400 feet (the grapevine on I-5) >

is any one doing it this way is ? what are you experinces are you inthe slow lane wtching colorado and tacos pass you or is it liveable?

315/70R17 is mathematically 34.4, and generally measures closer to 34 when mounted. Depending on your model, they’re only 1-2 inches taller than stock.

 

[kevman65]

I'm running 35x12.50R17 on 8.5" wide wheels on stock suspension and have no issues.

I was running about 5/8" strong to the drivers side and bought a Synergy track bar and brought it back to even.

Unless you're going to run some rough trails, I don't think you'll see any issues. There is a TON of stuff room in the Rubi fenders.

 

[wanderer]

315/70R17 is mathematically 34.4, and generally measures closer to 34 when mounted. Depending on your model, they’re only 1-2 inches taller than stock.

Yep brain fart I was thinking 37 which are 36.4

 

[wanderer]

If I did that would I need spacers.?

 

[smlobx]

You haven’t told us which model you have and do you have the 4.10 or 3.73 gears...

 

[kevman65]

You haven’t told us which model you have and do you have the 4.10 or 3.73 gears...

It's in his stats, he has a Rubi and I'm just assuming with an automatic so 4:10 gearing.

 

[wanderer]

It's in his stats, he has a Rubi and I'm just assuming with an automatic so 4:10 gearing.

Yes that’s right.

 

[brianinca]

Took a 12' cargo trailer down to Chula Vista from the Central Valley, step-son's family had a bunch of household in storage that needed delivered. KO2's in 315/70/17's are 34.5" tall on factory Rubicon rims (7.5" wide), speedo corrected with a Tazer. No issues going up the Grapevine or keeping up with traffic on the 5. 8th is still viable, in other words.


The Tazer gives me a locker in 2Hi, front swaybar disconnect in 2Hi, etc etc etc.

Just buy 315 70 17 ( BFG ) actuallly 36.4 put them on stock wheels no lift no regear and drive it wheel it modestly.. I have to go over some low mtn passes at 3400 anf 4400 feet (the grapevine on I-5) >

is any one doing it this way is ? what are you experinces are you inthe slow lane wtching colorado and tacos pass you or is it liveable?

 

[wanderer]

I'm running 35x12.50R17 on 8.5" wide wheels on stock suspension and have no issues.

I was running about 5/8" strong to the drivers side and bought a Synergy track bar and brought it back to even.

Unless you're going to run some rough trails, I don't think you'll see any issues. There is a TON of stuff room in the Rubi fenders.

Do you have a lift? I don’t understand why just swapping tires out would cause you to run 5/8 strong to one side. But I admit I don’t understand lifts very well. If by chancel I didn’t go with 37s and just with 35s could that happen ?

 

[Gobi-Wan Kenobi]

If I did that would I need spacers.?

You shouldn't need any suspension mods on a Rubicon for any tires up to 35". Jeep advertises that Rubicon can fit up to 35" tire with no rubbing and a 35" spare will fit under the bed without issues.

So the only thing you would need to do with 34.4" tires is recalibrate your speedometer. This can be done by any dealership or with one of the many electronic programmers out there for Wranglers/Gladiators.

 

[kevman65]

Do you have a lift? I don’t understand why just swapping tires out would cause you to run 5/8 strong to one side. But I admit I don’t understand lifts very well. If by chancel I didn’t go with 37s and just with 35s could that happen ?

No, stock suspension.

I would say check what you have now with stock track bar. After talking to a few local JK and JL owners, the stock track bar didn't have them dead centered with stock wheels and tires and it grew with aftermarket wheels and bigger tires.

So many variables and different tolerances in play, always better to measure first.

 

[wanderer]

No, stock suspension.

I would say check what you have now with stock track bar. After talking to a few local JK and JL owners, the stock track bar didn't have them dead centered with stock wheels and tires and it grew with aftermarket wheels and bigger tires.

So many variables and different tolerances in play, always better to measure first.

How can you measure that?

 

[kevman65]

How can you measure that?

I took a two foot level to the outside of the tire above the center line of the tire and then measured back to the fender on each side.

If you want to lay down and get it a little closer to true, measure from frame to tire on each side, as close to vertical center of tire as possible.

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