Offset and Backspacing HELP!

[Whitemoose]

Hello everyone, first post here. I just purchased a 2021 ORP in magnetic grey! I'm adding the eibach pro-truck lift which is 2.75 front and 1 rear, with JBA UCA's. I picked out 285/70/r17 Ridge Grapplers but am having trouble picking rims. I want enough to clear UCA's and have the least amount of trimming possible with the tire upgrade. I really love these fuel coverts, they come in two different sizes and I'm not sure what would be best. Size 1: 01mm offset with 5 inch backspacing. Size 2: -12mm offset with 4.5 inch backspacing. Thanks!!

 

[08TxRunner]

OMG! Awesome!!!

 

[4rNCMTNs]

I'm running 17x8 - 10 offset (4.1BS) wheels with a 305/70 tire and have no rubbing with proper alignment. you second choice is better.

 

[2021nightshade4x4]

Heck I saw some cool Fuel wheels that have -44mm backspacing I am seriously considering those.


Sent from my iPhone using Tapatalk

 

[Grape Ape]

Go here for visual Wheel Offset Calculator

You won't have any issues.

 

[Whitemoose]

Thanks everyone for the input! Looks like i will be going with option 2. I will post pics when I can get them on!

 

[daytonaviolet]

With the Jba, you can only run up to 4.5” back spacing & 315/17/70 before you come close to hitting the UCA.

 

[YellowSnow]

You are going to be limited with your alignment using JBA’s, especially pushing caster forward so you don’t rub the body mount, pinch welds etc.

 

[comtn4x4]

Hello everyone, first post here. I just purchased a 2021 ORP in magnetic grey! I'm adding the eibach pro-truck lift which is 2.75 front and 1 rear, with JBA UCA's. I picked out 285/70/r17 Ridge Grapplers but am having trouble picking rims. I want enough to clear UCA's and have the least amount of trimming possible with the tire upgrade. I really love these fuel coverts, they come in two different sizes and I'm not sure what would be best. Size 1: 01mm offset with 5 inch backspacing. Size 2: -12mm offset with 4.5 inch backspacing. Thanks!!

As was already said that backspacing is known to be a problem with the JBA UCA's. I'd look at a different rim if you have your heart set on the JBA UCA's.
That being said, I run Fuel Revolvers in +1 5 inch. It's a great setup when paired with the right UCA's. I run 285/75's currently and have run 305/70's in the past without any rubbing on the UCA's. However, be prepared to have a BMC and do some chopping front and rear on the fender liner and make sure your caster is between 4 and 5 degrees.
Honestly if you love the rims just get a different UCA that's more universally compatible.

 

[TheJokingExplorer]

Every time I see one of these threads I wish I wouldn't have gone with JBA UCA's:redbrick:

 

[Charlievee]

Hello everyone, first post here. I just purchased a 2021 ORP in magnetic grey! I'm adding the eibach pro-truck lift which is 2.75 front and 1 rear, with JBA UCA's. I picked out 285/70/r17 Ridge Grapplers but am having trouble picking rims. I want enough to clear UCA's and have the least amount of trimming possible with the tire upgrade. I really love these fuel coverts, they come in two different sizes and I'm not sure what would be best. Size 1: 01mm offset with 5 inch backspacing. Size 2: -12mm offset with 4.5 inch backspacing. Thanks!!

Have you checked the recommended rim sizes for 285's on the JBA website? Turns out i still have them handy from the last time this issue was posted.

LT285/70R17 (32.7" x 11.2") tire on 17 x 9 wheel, -12mm offset (4.50" backspace)

LT285/70R17 (32.7" x 11.2") tire on 17 x 8.5 wheel, -9mm offset (4.30" backspace)

LT285/70R17 (32.7" x 11.2") tire on 17 x 8.5 wheel, 0mm offset (4.75" backspace)

LT285/75R16 (32.8" x 11") tire on 16 x 9 wheel, -19mm offset (4.25" backspace

 

[Whitemoose]

Have you checked the recommended rim sizes for 285's on the JBA website? Turns out i still have them handy from the last time this issue was posted.

LT285/70R17 (32.7" x 11.2") tire on 17 x 9 wheel, -12mm offset (4.50" backspace)

LT285/70R17 (32.7" x 11.2") tire on 17 x 8.5 wheel, -9mm offset (4.30" backspace)

LT285/70R17 (32.7" x 11.2") tire on 17 x 8.5 wheel, 0mm offset (4.75" backspace)

LT285/75R16 (32.8" x 11") tire on 16 x 9 wheel, -19mm offset (4.25" backspace

Yes I saw this! Perfectly fits the fuel covert. They have a -12mm offset and a 4.5" backspacing. Makes it an easy option now lol