Good Afternoon Folks,

I am currently In the process of purchasing some 17x9 wheels I will be running on a 2015 Jeep 2 door sport with 285/70/17 more than likely will add a 2.5 lift as well. The wheel is offered in 0mm offset which I believe is a 5" backspacing and a -12mm which is a 4.5" backspacing. Which would be more well suited for my application? Will the 0mm rub at full turn? Does the 0mm mean that the wheel will have less lip depth? Sorry if my question are borderline stupid but I want to be 100% sure. The wheels im looking at are level 8 zx

Thanks

 

-12 will work without issue and will work with 35s as well should you move up (which most eventually do).

You didn't ask, but since we've all been there, I'll offer. Why spend that amount of money for slightly larger tires? Cheaper to buy a set of new takeoff wheels from a Rubicon if you want mud tires. Otherwise, look at the 315/70-17 tires. More like 34".

 

My jeep is coming with the 29in tires and 16's chief. So bumping up to 33 is still a considerable upgrade. I may go with the 315 but my jeep will be a dd and more than likely only see trails once a month if at that. Mostly beach and camping trips. Just to make sure I understand. A 0mm offset will mean the wheel will have less lip and also not stick out much right? Will I rub at full turn with 33's? I tried searching for a pic of 17x9 on 0mm on a jeep and wasn't successful.

 

You may rub at 5" bs but you may not. Depends on the actual tire size. If you do it will be minimal. The 0 mm refers to the mounting surface in relation to the center of the wheel. 0 mm would be dead nuts center, -12 mm would be 12 mm inward from center thus giving you more back spacing. sent from my work leash

 

I just had this discussion with dirtman yesterday. 0 offset on a 9" rim should be 4.5" of backspacing. So a -12 offset should be 4" of backspacing. I have checked online calculators and they do report 0 offset as 5" of backspacing on a 9" rim. Not sure why.

Link to thread and a pic:

https://www.jk-forum.com/forums/jk-w...7/#post3992096

 

I had this discussion a while ago and to not cause the thread to get too jumbled, here's what I wrote. It was determined that it had to do with adding 1/2 inch x 2 for the rim lip. Or something to that effect.

 

I thought the same thing. But that would only make sense to me if the flanges were different sizes. Say the flanges are .5". That would add an inch to the wheel width but the centerline would still be the same. No?

Edit: Just realized, even though the centerline would be the same the offset would be .5" different. I really trust dirtman. So I'm sticking with his assessment.

 

Sometimes a picture...



From what I gather that is the case, the lip width is standard 1/2 inch

 

Yeah I am not one of those people that needs to be right. My disclaimer in my post mentioned I am no wheel expert. If someone knows the answer and you trust them, go with it. I only know what I learned and have seen consistently.

 

Yeah I understand that....which is what my edit said above. But that is working on the assumption that rim widths are measured from the bead edge and not the flange. I just don't know if that's true. If that is true then that would explain it.

Edit: Even in the diagram I posted it shows two different lines on each edge. Unfortunately, there is no explanation for that on the site that I pulled it from.

Edit again: You can see in post 7 of the link I posted that I wondered if it was the flange but I could not confirm that anywhere.