17x9 +12 offset wheels

Jerrybizzle

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So I’ve tried searching and having a hard time finding exactly what I’m looking for. Anyone running +12 9 inch wide wheels with 12.5 wide tires? I have a 19 rubicon that will be getting RC spacer lift next week. I ordered the +12 offset and 37 12.5 17 mastercraft mxt tires. I want them tucked in a bit but don’t want to be into the suspension when flexed. From all my calculations I should be fine but would like reassurance from someone running a similar setup. I will have 13mm more inner wheel clearance than stock wheels and some have run stock wheels without issue.

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ChattVol

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So I’ve tried searching and having a hard time finding exactly what I’m looking for. Anyone running +12 9 inch wide wheels with 12.5 wide tires? I have a 19 rubicon that will be getting RC spacer lift next week. I ordered the +12 offset and 37 12.5 17 mastercraft mxt tires. I want them tucked in a bit but don’t want to be into the suspension when flexed. From all my calculations I should be fine but would like reassurance from someone running a similar setup. I will have 13mm more inner wheel clearance than stock wheels and some have run stock wheels without issue.

600C7CFB-89F8-4A5A-83B3-A61C15335539.jpeg
Several factors at play here...Do you plan on wheelin it and flexing alot? I have +10 offset(5.2 backspacing) 17 × 8.5 wheels which adds 19mm(.75") of inner clearance vs. stock with 35" tires and it clears everything at full flex with 2 bumpstops. I imagine you're 13mm of inner clearance may rub inner fenders a bit when flexing up on 37's depending on bumpstop setup. I feel backspacing around 4.5 is ideal for 37s on a rubicon which gives you about 1.5" of inner clearance vs stock. If I could upgrade wheels, I would go a little wider bc I've gotten into wheelin. Best of luck..
 
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Jerrybizzle

Jerrybizzle

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I guess worse case I’ll add the inner fender liners. I’ll reply to this post when I get them on and see how they do. I do wheel, but not a ton at this point but will be going a couple times a month. Heading to Moab in October, but if I do rub it will be at slow speeds so should be okay for now and will assess afterwards.
 

ChattVol

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I guess worse case I’ll add the inner fender liners. I’ll reply to this post when I get them on and see how they do. I do wheel, but not a ton at this point but will be going a couple times a month. Heading to Moab in October, but if I do rub it will be at slow speeds so should be okay for now and will assess afterwards.
Did you get these mounted with 37s? Clearance issues when flexing?
 
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Jerrybizzle

Jerrybizzle

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Did you get these mounted with 37s? Clearance issues when flexing?
They just rub a little bit on the rear fender liners. Not enough to matter to me. No front issues. Have taken it to Moab and off road a few times locally as well. I do have the rear bump stop in the 3 inch (vertical) position. At full lock and full flex I could possibly get it to rub, but in normal off roading it hasn’t rubbed real bad.

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Jerrybizzle

Jerrybizzle

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I did order the mopar lift as I just had the spacer lift on until I could figure out a decent full lift to put on. It arrives today but I won’t have time to get it put on until after thanksgiving unless I can find a full day to set aside for it. I already have front adjustable track bar and will be putting on rear track bar bracket so shouldn’t have issues with the mopar lift.
Here’s a couple more pics showing how far they stick out and the only other flex pics I have on my phone.

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JL2021guy

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They just rub a little bit on the rear fender liners. Not enough to matter to me. No front issues. Have taken it to Moab and off road a few times locally as well. I do have the rear bump stop in the 3 inch (vertical) position. At full lock and full flex I could possibly get it to rub, but in normal off roading it hasn’t rubbed real bad.

F4AE3E5A-6C84-4A6C-9C4E-A643E39B658C.jpeg


FA2AC330-E034-4001-B56F-522A6EF8480D.jpeg


23069314-E458-4A8F-81A8-21BE52450A91.jpeg


835233DF-304A-40CB-A0A6-6AC893D6AB1D.jpeg


37B344F1-17B2-496B-84B5-E6F6A92E0FBD.jpeg
Where exactly is the rubbing in the rear . I’m interested in this setup possibly. It would worry me if the rubbing is on back side of the tire vs the treads .
 

JL2021guy

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Several factors at play here...Do you plan on wheelin it and flexing alot? I have +10 offset(5.2 backspacing) 17 × 8.5 wheels which adds 19mm(.75") of inner clearance vs. stock with 35" tires and it clears everything at full flex with 2 bumpstops. I imagine you're 13mm of inner clearance may rub inner fenders a bit when flexing up on 37's depending on bumpstop setup. I feel backspacing around 4.5 is ideal for 37s on a rubicon which gives you about 1.5" of inner clearance vs stock. If I could upgrade wheels, I would go a little wider bc I've gotten into wheelin. Best of luck..
Any profile pic
 
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Jerrybizzle

Jerrybizzle

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Where exactly is the rubbing in the rear . I’m interested in this setup possibly. It would worry me if the rubbing is on back side of the tire vs the treads .
Here’s a couple pics. It’s kind of a pic your poison deal. With the rubicon if you go 9 wide -12 wheels you’ll rub the fender flare with +12 you’ll rub the inners a little. Here’s a couple pics.

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