Uneven Offset? A Weird Wheel Fitment problem.
Thread Starter
Joined: Apr 2007
Posts: 900
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From: Fort Walton Beach, FL
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

Driver Side

Rears:
Passenger

Driver

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?
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

Driver Side

Rears:
Passenger

Driver

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?
Joined: Jun 2008
Posts: 1,065
Likes: 1
From: B̷͈͇̠̗͔̼̝̓̎͛͂A̧̡̠̩̭̹̼̭͔̎̃̈́̍͂ͬͬ̚Y̯̜ͨ̒̾̽͊͘ ͈͙̰
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
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.
Thread Starter
Joined: Apr 2007
Posts: 900
Likes: 8
From: Fort Walton Beach, FL
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
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
EDIT: Edited the original post to clarify, I have a front rear staggered set up, not a 10" all around, sorry.
Joined: Jun 2008
Posts: 1,065
Likes: 1
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.
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.
Thread Starter
Joined: Apr 2007
Posts: 900
Likes: 8
From: Fort Walton Beach, FL
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.
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.
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.
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.
Joined: Jun 2008
Posts: 1,065
Likes: 1
From: B̷͈͇̠̗͔̼̝̓̎͛͂A̧̡̠̩̭̹̼̭͔̎̃̈́̍͂ͬͬ̚Y̯̜ͨ̒̾̽͊͘ ͈͙̰
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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Thread Starter
Joined: Apr 2007
Posts: 900
Likes: 8
From: Fort Walton Beach, FL
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
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
Looks like its back to Firestone first thing tomorrow morning. Thanks a lot for the patience and help fellas.
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.
Glad you got it sorted.
Thread Starter
Joined: Apr 2007
Posts: 900
Likes: 8
From: Fort Walton Beach, FL
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.
Glad you got it sorted.
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
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.
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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