does a stock rim have offset???
JK Junkie
Joined: Oct 2008
Posts: 2,008
Likes: 0
From: Fort St John B.C.
yes the only reason people are changing the back spacing is because the bigger tires contact the control arms or frame when turning so folks space the wheel out more. if you run the exact same tires size you can use stock BS
JK Super Freak
Joined: Nov 2007
Posts: 1,108
Likes: 1
From: SLC, Utah
Backspacing and offset measure the same thing: the location on the mounting flange of the wheel. They differ in that backspacing measures the distance to the mounting flange from the BACKSIDE face of the wheel, while offset measures the location of the mounting flange to the CENTERLINE of the wheel. The key is that the backspacing does not depend on the width of the wheel, but the offset depends on the width of the wheel (since that moves the centerline).
So if you know the backspacing you know exactly how much it'll stick out. If you only know offset, you also need to know the width of the wheel to know how much it'll stick out.
In the end, you only need to know EITHER - not both - since they measure the same thing.
Does that make sense?
So if you know the backspacing you know exactly how much it'll stick out. If you only know offset, you also need to know the width of the wheel to know how much it'll stick out.
In the end, you only need to know EITHER - not both - since they measure the same thing.
Does that make sense?
If you use lug centric wheels on a JK that could make it ride like crap. Personally, I used hub centric wheel spacers to get the backspacing of my factory wheels to 4.75" and it rides better than stock. There are several wheels out there that are designed to be hub centric on JKs. If wheel spacers are not an option, I would choose one of those hub centric wheels first.
JK Jedi
Joined: Apr 2008
Posts: 4,470
Likes: 1
From: Westchester, NY
Right but my question is all the wheels I want to run are not stock backspace but I don't want bigger tires. Is this going to make my ride bad like the steel proconps did? Or was that just because they are heavy steel and were an extreme backspace (4.5)
JK Enthusiast
Joined: May 2009
Posts: 318
Likes: 0
From: Los Angeles, CA
You don't HAVE to only use stock backspacing. If you want to move your wheel out for any reason (even just for looks) you can do so by either reducing the offset or reducing the backspacing. There's nothing wrong with that, it's what people do when they use wheel spacers. Though you do change the scrub radius, I haven't heard of people having an issue because of it.
JK Junkie
Joined: Oct 2008
Posts: 2,008
Likes: 0
From: Fort St John B.C.
I think you may have just had bad luck with your last tire rim combo
JK Super Freak
Joined: Nov 2007
Posts: 1,108
Likes: 1
From: SLC, Utah
Sorry for the confusion. I am running stock tires on stock wheels with wheel spacers (Until I have enough cash for my lift and bigger tires). When I added wheel spacers my JK actualy feels more stable in corners and rides a little smother than before. Adding backspacing is not the problem.
Correct me if I am wrong folks but I think the real problem was that the Procomps were lug centric not hub centric.
Correct me if I am wrong folks but I think the real problem was that the Procomps were lug centric not hub centric.
JK Enthusiast
Joined: Apr 2009
Posts: 194
Likes: 0
From: St Louis, MO
width of tire
So when people say 35" tires won't rub with a wheel of a certain backspacing, they're technically not correct, right? A 35x10.5 might not rub, but a 35x14.5 quite possibly would.
Man, every time I decide on my new tires and wheels I change my mind again.
Man, every time I decide on my new tires and wheels I change my mind again.
Thread Starter
JK Super Freak
Joined: Aug 2009
Posts: 1,255
Likes: 2
From: GRANDE PRAIRIE, AB
Sorry for the confusion. I am running stock tires on stock wheels with wheel spacers (Until I have enough cash for my lift and bigger tires). When I added wheel spacers my JK actualy feels more stable in corners and rides a little smother than before. Adding backspacing is not the problem.
Correct me if I am wrong folks but I think the real problem was that the Procomps were lug centric not hub centric.
Correct me if I am wrong folks but I think the real problem was that the Procomps were lug centric not hub centric.
JK Super Freak
Joined: Nov 2007
Posts: 1,108
Likes: 1
From: SLC, Utah
It's the exceptions that make this complicated.