Wheel offset for 2020 Rubicon

[surveyor]

I have a 2020 Rubicon with 3.5” Teraflex lift and 35” cooper sst tires, I getting new 17” wheels what offset should I get?

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[Fouts]

Kinda depends how much you want them to stick out past your fenders. "poke"

 

[surveyor]

Kinda depends how much you want them to stick out past your fenders. "poke"

Rubicon wheel base is wide enough already I would like the minimum

 

[Fouts]

I really like the +25 that aev and some of the method wheels offer. I believe the stock Rubicon wheels are in the + 44 neighborhood. You may need to verify with Metalcloak to see if they have a recommendation.

 

[Reinen]

Stock Rubicon wheels are +44 offset, rather severely tucked in. You won't find many aftermarket wheels with that much of an offset. Since you'll likely have to choose a different offset, use this link for an exact measure and visualization of what different offsets & tire sizes will do.

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

 

[Discount Tire]

If you want the least amount of poke possible, you'll want to stay positive offset.

As Reinen noted though, selection is somewhat limited, however you do have options in 17x8.5 that come in +18mm, +25mm and +35mm.

 

[Headbarcode]

It really boils down to what your priorities are. Depending on how flexible your setup is, as far as how much droop your kit affords, too little of tire poke will result in tire rubbing before reaching full suspension travel.

Best to fully cycle the suspension with your current wheel and tire combo, to see how much clearance you have. Next step would be determining whether or not there's enough room for 37's. A measuring tape set to 37" and held against the inner sidewall will help show you how much backspace you need. The tire won't actually be the full 37", but using that much measuring tape will provide built-in clearance.

 

[BIGW0RM]

You want 17x8.5 -6 offfset with that much lift and 35's if you ask me.

Postive offset is for the hard core rock crawlers. Yours will look super tall and skinny with positive offset.

This guy has 17x8.5 -06 with 37's. See how that looks to you offset wise.


Heres a members with 17x8.5 -6 offset too.
https://www.jlwranglerforums.com/forum/threads/icon-wheels.12066/page-8#post-940339

 

[surveyor]

It really boils down to what your priorities are. Depending on how flexible your setup is, as far as how much droop your kit affords, too little of tire poke will result in tire rubbing before reaching full suspension travel.

Best to fully cycle the suspension with your current wheel and tire combo, to see how much clearance you have. Next step would be determining whether or not there's enough room for 37's. A measuring tape set to 37" and held against the inner sidewall will help show you how much backspace you need. The tire won't actually be the full 37", but using that much measuring tape will provide built-in clearance.

 

[surveyor]

Thanks for the responses I have a lot to learn but that the fun part of owning a Jeep

 

[Headbarcode]

Thanks for the responses I have a lot to learn but that the fun part of owning a Jeep

We're always here to help. There's a great collection of people around here, so don't ever hesitate to reach out.

 

[LOBBS]

Most lift kit manufacturers will specify a minimum amount of backspacing to work with their kits. Backspacing and offset are related but different measurements. Backspacing is simply the distance from the mounting pad to the back edge of the wheel. Contrary to popular belief, offset is an irrelevant number without also knowing the width of the wheel. Offset is the distance in millimeters relative to the centerline of the wheel. You can't calculate the centerline without knowing how wide the wheel is. For instance, a 17 x 8.5" with a zero offset has the same backspacing as a 17 x 9" wheel with a -6 offset or a 17 x 7.5 with a +13.

 

[surveyor]

Stock Rubicon wheels are +44 offset, rather severely tucked in. You won't find many aftermarket wheels with that much of an offset. Since you'll likely have to choose a different offset, use this link for an exact measure and visualization of what different offsets & tire sizes will do.

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

Reiner please check my math using the above chart. I currently have stock 7” wheel with +44 offset giving me 6” of BS minus 1 3/4” wheel spacers for a net BS of 4 1/4”. The new wheel are 8” using O offset would give a 4 !/4” bs. Your comments are appreciated

 

[Reinen]

Reiner please check my math using the above chart. I currently have stock 7” wheel with +44 offset giving me 6” of BS minus 1 3/4” wheel spacers for a net BS of 4 1/4”. The new wheel are 8” using O offset would give a 4 !/4” bs. Your comments are appreciated

You have wheel spacers? In that case use the Offset Converter tab to convert from wheel width & BS to Offset.

Or you can think about it this way. Offset is mm off from wheel center (positive towards the outside of the wheel).

1 3/4" = 44.45mm.
So your spacer is effectively -44.45 to offset. If you're not picky about half a millimeter, an aftermarket wheel with 0 offset will put the center of the wheel in the same place as your +44 offset stock wheels with the spacers.

 

[Discount Tire]

Reinen is spot on, 1-3/4" wheel spacers effectively removes 44.45mm off the factory offset.

The 17x8 with 0 offset is going to sit 1/4" further out when compared to your factory wheels with spacers.

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