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Uneven Offset? A Weird Wheel Fitment problem.

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Old Oct 31, 2012 | 12:24 AM
  #1  
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Uneven Offset? A Weird Wheel Fitment problem.

So I usually don't have to resort to asking through posts but forum searches using the terms uneven, unbalanced, and offset do not turn out positive results.

So I just installed some new wheels, and these wheels are at the outer boundary of what the FD can fit stock. My main concern here is I am running a 18x10 +35 with a 255/35/18 FRONT and 18x10.5 +25 with 265/35/18 REAR. Some might say this doesn't actually fit within stock fenders, but the thing is, it sort of does.


Passenger Side
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Driver Side
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Rears:
Passenger
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Driver
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It seems that the passenger side has room to spare, but the driver's side sticks out a little bit more than I calculated. The wheels are brand new, tires brand new, fronts same size and offset, rears are same size and offset. I got the car aligned within the past year, so the camber should be pretty close to even, but even then the difference in offset is so large its hard to believe that its just uneven camber alone.

I know with everything stock the FD has an uneven ride height from passenger to driver side, but I never heard of an uneven hub offset/backspacing. The car is sitting on Stance GR+ coilovers with an even ride height all around (I compensated for the FD's natural uneven height)

So my question is, have any of you noticed that the drivers side of the FD sticks out more than the passenger side? If so, any idea as to what could cause this?
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Old Oct 31, 2012 | 12:33 AM
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Are you positive you got the same offsets all around? Try swapping your Driver side Front wheel with your Passenger side Rear wheel, what happens...?

The disparity you see is definitely not camber related. Most likely your wheels are not the same sizes. Your driver side front and driver side rear wheels look to be more like ~18x10" +18

Last edited by Farkel; Oct 31, 2012 at 12:36 AM.
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Old Oct 31, 2012 | 12:38 AM
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Originally Posted by Ericsworld
Are you positive you got the same offsets all around? Try swapping your Driver side Front wheel with your Passenger side Rear wheel, what happens...?

The disparity you see is definitely not camber related. Most likely your wheels are not the same sizes. Your driver side front and driver side rear wheels look to be more like ~18x10" +18
That wouldn't work because the rear is 10.5" +25 =/. Tomorrow I'm going to try swapping the Passenger and Driver side front wheels just to make sure, but they do both say +35 on the box, brand new unopened. They're advans, so it's not a question of wheel quality.

EDIT: Edited the original post to clarify, I have a front rear staggered set up, not a 10" all around, sorry.
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Old Oct 31, 2012 | 12:43 AM
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From: B̷͈͇̠̗͔̼̝̓̎͛͂A̧̡̠̩̭̹̼̭͔̎̃̈́̍͂ͬͬ̚Y̯̜ͨ̒̾̽͊͘ ͈͙̰
From your original post I assumed you were trying to run 18x10 +35 with 255/35 all around. Either way, I would still try to verify the sizing of the wheels. Try taking the 10.5" rears off and look on the backside to see if there are any offset/width numbers stamped into the cast.

Also, if for example both wheels are 10.5" and have the same concavity + faces and are 1-piece, you can tell if one is a higher offset usually by the depth of the wheel hub area. Look at your lugnuts (given that they are all the same), do the lugnuts of one wheel seem to protrude outwards farther, relative to the spokes, than on the other wheel? Obviously if the 2 wheels are exactly the same sizing, the lugnuts should seat and protrude at the same depth.

By the way, going by your edited post and wheel specs, the way your front driver side wheel fits looks pretty similar to a 10.5 +25 in my opinion. Just a suspicion.

Last edited by Farkel; Oct 31, 2012 at 12:57 AM.
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Old Oct 31, 2012 | 01:10 AM
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Originally Posted by Ericsworld
From your original post I assumed you were trying to run 18x10 +35 with 255/35 all around. Either way, I would still try to verify the sizing of the wheels. Try taking the 10.5" rears off and look on the backside to see if there are any offset/width numbers stamped into the cast.

Also, if for example both wheels are 10.5" and have the same concavity + faces and are 1-piece, you can tell if one is a higher offset usually by the depth of the wheel hub area. Look at your lugnuts (given that they are all the same), do the lugnuts of one wheel seem to protrude outwards farther, relative to the spokes, than on the other wheel? Obviously if the 2 wheels are exactly the same sizing, the lugnuts should seat and protrude at the same depth.

By the way, going by your edited post and wheel specs, the way your front driver side wheel fits looks pretty similar to a 10.5 +25 in my opinion. Just a suspicion.
Yeah I'll rotate the wheels tomorrow and report back in. I did check the lug nuts and they are all exactly on the same spot on the stud on both sides. (I.E. they protrude the exact same amount, but I'll double check to make sure.) I seriously doubt its a 10.5 in front because a 255 on a 10.5 would stretch a lot more than in the picture.

The suspicious thing is that the rear and and the front both protrude about the same amount more on the driver side than the passenger side. So if it were a case of mismatched wheels, that means I have two incorrectly sized/offset wheels. Basically the both the front and rear passenger side wheels fit exactly how I calculated they would fit, while both the driver's side wheels protrude about 10mm further than I figured they would.

Thanks for the persistent help though, I appreciate it. I used your XD9 10"+38 fitment to verify that my 10"+35 would fit.
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Old Oct 31, 2012 | 01:24 AM
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I'd guess that you have the 10s on one side and 10.5 on the other. If you dont find stampings on the backs or stickers in the barrels, you can at least double check that you have matching pairs with a ruler and a straightedge measuring backspace.
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Old Oct 31, 2012 | 01:24 AM
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Originally Posted by championadrien
Yeah I'll rotate the wheels tomorrow and report back in. I did check the lug nuts and they are all exactly on the same spot on the stud on both sides. (I.E. they protrude the exact same amount, but I'll double check to make sure.)

...
Don't look at the lug nuts relative to the wheel studs, as they will thread in the same amount regardless, only unless you are using a spacer behind the wheel. Look at the lug nuts relative to the wheel spokes. Do the lug nuts on one wheel appear to sit "deeper" into the wheel?

But definitely rotating Driver side Front wheel with your Passenger side Rear wheel will be the easiest clue to all of this.

I'll admit I am curious and fancy the solution to be an under-the-nose one
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Old Oct 31, 2012 | 01:46 AM
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Originally Posted by chaos7
I'd guess that you have the 10s on one side and 10.5 on the other. If you dont find stampings on the backs or stickers in the barrels, you can at least double check that you have matching pairs with a ruler and a straightedge measuring backspace.
Originally Posted by Ericsworld
Don't look at the lug nuts relative to the wheel studs, as they will thread in the same amount regardless, only unless you are using a spacer behind the wheel. Look at the lug nuts relative to the wheel spokes. Do the lug nuts on one wheel appear to sit "deeper" into the wheel?

But definitely rotating Driver side Front wheel with your Passenger side Rear wheel will be the easiest clue to all of this.

I'll admit I am curious and fancy the solution to be an under-the-nose one
Heh. You were both right. Firestone mounted the 265 on both the 10 and 10.5... I didn't think they would mess that up so I completely overlooked the fact that 265 tires don't automatically mean 10.5" wheels. The wheel sizes aren't stamped and the stickers only contain the PCD so I guess its an understandable mistake.

Looks like its back to Firestone first thing tomorrow morning. Thanks a lot for the patience and help fellas.
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Old Oct 31, 2012 | 01:49 AM
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Proof. Its quite obvious once you know what to look for.
Attached Thumbnails Uneven Offset? A Weird Wheel Fitment problem.-img_1269.jpg   Uneven Offset? A Weird Wheel Fitment problem.-img_1270.jpg  
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Old Oct 31, 2012 | 02:23 AM
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^ There you go.

My next suggestion would have been to just buy my XD9s
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Old Nov 1, 2012 | 12:24 AM
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Firestone strikes again.... And they wont let you watch them mount them right?. I wouldn't let them mount my Work Meisters for that reason. Went to a local tire shop and got much better service. Talked to the tech as we both inspected the wheels before mounting. Proper service for a $900 per wheel task.

Glad you got it sorted.
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Old Nov 1, 2012 | 03:18 PM
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Originally Posted by Ericsworld
^ There you go.

My next suggestion would have been to just buy my XD9s
Haha, they're clean wheels. I'm surprised you still have them. Interesting Fact: I took a gander at your blog and noticed that we installed the AVH8400 in the same week. Fantastic head unit isn't it?

Originally Posted by XLR8
Firestone strikes again.... And they wont let you watch them mount them right?. I wouldn't let them mount my Work Meisters for that reason. Went to a local tire shop and got much better service. Talked to the tech as we both inspected the wheels before mounting. Proper service for a $900 per wheel task.

Glad you got it sorted.
Yeah the only reason I had it installed by them is because I also bought the tires from them which were surprisingly hard tires to come by locally. Didn't notice any scratches scuffs or any problems besides the mismatched tires, but I can see where you're coming from with Meisters haha.


Got the tires swapped free of charge and hassle, didn't even have to show ID. Also received multiple apologies, so I'm not bugged about it. Car drives great now. =D
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Old Nov 3, 2012 | 09:36 PM
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If you're doing 10.5 in the rear I would have gone with a different offset and wider tires. That's what I run on 9.5 in the rear at the moment.
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Old Nov 5, 2012 | 01:19 AM
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Yeah, but its about impossible to find any monoblock wheel 10.5" or wider with a deeper offset so you can fit a wider tire.

I went through the search too. Ended up with Enkie PF01 10.5 +38 all around with 265/35-18.

I will probably roll the rear fenders for next season and get offset bushings for the front so I can use 295/30-18 all around as R888 is cheapest in that size.

Ideal offset for max tire/rim width on stock body seems to be +45.
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