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Thread: Wheel Offset Sticky Discussion and Wheel Fitment Questions.....

  1. #26
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    The MINI guys have a pretty good Wheel FAQ here: http://www.mini2.com/forum/faq.php?faq=faq_wheels_tyres I think something like this would be a good start. They also have links to Tirerack's website for some good technical info about wheels/tires.

    I found it to be very helpful when I was trying to find out more info about winter wheels/tires for my car. And when I started shopping for nicer summer wheels.

  2. #27
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    4) M coupe (front) 18x8 et35 245/35-18, (rear) 18x11 et13 295/30-18, TCK S/A coilovers. No rubbing, no spacers.

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  3. #28
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    many people might define their setup as "perfect", but that's going to vary by opinion (some people prefer flush, poke, tuck, etc...)

    so we should make sure all things are defined; ride height, exact tires used, camber settings, and definitely very good measurements taken to define how many mm the wheel/tire is poking/tucking

    it's easy enough to post up a wheel/tire setup and say it fits/looks good, but detailed pics/specs/measurements are going to make the sticky more valuable

    Perhaps we could have a standard "form" that you fill out before you post up your setup, as well as a standard set of required pictures?


  4. #29
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    Any roadster with x8.5 or x9 front and x11 or 10.5 rear??? Or the roady is the same fitment as the coupe?

  5. #30
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    Quote Originally Posted by Terry F. View Post
    Could I get confirmation of stock offsets? Also, can anyone add the wide bodied Zs numbers?

    Thanks
    What are you referring to a "wide-body" Z3? 4cyl v 6cyl? pre v. post facelift?

    All the 6 cyl non-Ms should be the same as far as fittment, but stock sizes on those varied quite a bit. The 4cyl, 2.3, and some 2.8s came with 16"s. 17s were optional on the 2.8, standard on the 3.0.

  6. #31
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    Finally, and great idea!!!

    I do not think we need an exhaustive list of all setups that work. What we need is a stock and 'aggressive' setup for each model. Anything more will be too confusing and too hard to search through. If you are between stock and aggressive, it works.

    Should include Stock specs and then the most aggressive setups that don't rub/still look normal. This can include aftermarket suspensions, spacers, wheel width, offset, tire size, camber plates. What i mean by still look normal, i mean don't require fender rolling or exhibit 'poke' or stretched tires. Those could be other categories.

    After having typed that, maybe we need a stock/aggressive per model/suspension. For example:

    M, stock suspension
    1. Stock offset/fitment
    2. Aggressive offset/fitment

    M, TCK Suspension
    1.
    2.

    M, TCK w/ camber plates
    1.
    2.

    So on and so forth for all models.

    Oh, and I love this site for selecting tires for aftermarket wheels.
    http://www.net-comber.com/tirecalc.html
    Last edited by fmcfad01; 03-21-2012 at 02:26 PM. Reason: Automerged Doublepost

  7. #32
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    Quote Originally Posted by Matt Day View Post
    What are you referring to a "wide-body" Z3? 4cyl v 6cyl? pre v. post facelift?

    All the 6 cyl non-Ms should be the same as far as fittment, but stock sizes on those varied quite a bit. The 4cyl, 2.3, and some 2.8s came with 16"s. 17s were optional on the 2.8, standard on the 3.0.

    My 99 2.8 coupe stock wheel offset is 46, not 41 as I have read many times. This sticky should clarify for other noobs. Great idea!

  8. #33
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    Yes, the 16x7 stock wheels are 46mm offset. The staggered 17" stock wheels are 41mm.

    Stated very explicitly, the following are the stock sizes for all Z3s. Doesn't matter what style/color wheels you got, these were the only size combos.

    ---------------
    16x7 ET46 225/50-16 F&R (standard all non-M '96-'02 except 3.0i - that's '96-'98 1.9, '97-'00 2.8, '99-'00 2.3, '01-'02 2.5i)
    ---------------
    17x7.5 ET41 225/45-17 F (standard '01-'02 3.0i, optional elsewhere)
    17x8.5 ET41 245/40-17 R
    ---------------
    17x7.5 ET41 225/45-17 F (standard '99-'02 M)
    17x9 ET8 245/40-17 R
    --------------
    Last edited by JoshS; 03-21-2012 at 06:11 PM.
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  9. #34
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    ok, so it goes like this right?

    Rear fitment:
    -4cyl = narrow fenders + short axles
    -6cyl = wider fenders + longer axles
    -M = wider fenders + shorter axles (hence the crazy low factory offsets)

    Front fitment on all Z3s is the same, regarding actual bodywork or axle length?


  10. #35
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    Quote Originally Posted by 2000mkoop View Post
    ok, so it goes like this right?

    Rear fitment:
    -4cyl = narrow fenders + short axles
    -6cyl = wider fenders + longer axles
    -M = wider fenders + short axles (hence the crazy low factory offsets)

    Front fitment on all Z3s is the same, regarding actual bodywork or axle length?
    fixed...

    I believe it's "basically" that the M has the 4 cyl rear suspension with the wide fenders. That's why the guys with narrow bodies can fit the 6 cyl rear fenders and then get the M offsets.
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  11. #36
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    Would any discussion of spacers be appropriate to this thread or are there too many variables?

    TIA

  12. #37
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    Quote Originally Posted by paul4223
    Would any discussion of spacers be appropriate to this thread or are there too many variables?

    TIA
    Meh I think it can be summed up to anything over 5mm you will want it to be hubcentric or you may experience vibration.

    Honestly we don't need setups that work just the basic off set info for the 3 models and a thorough explanation of how offset works.

    I believe it has already been said but I just wanted to reiterate the point.
    Last edited by Bear Grylls; 03-21-2012 at 06:21 PM.

  13. #38
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    Quote Originally Posted by dion View Post
    fixed...

    I believe it's "basically" that the M has the 4 cyl rear suspension with the wide fenders. That's why the guys with narrow bodies can fit the 6 cyl rear fenders and then get the M offsets.
    thanks; not sure why i typed it like that

    somebody already mentioned jonesmechanical, but yeah, seems like i've seen other threads where he's got all the data figured out for maximum backspacing, ideal offsets, tire sizes, etc...

    Between him and Asim's RS builds, seems like they've kinda got the maximum ideal setups figured out without being crazy aggressive (excessive camber, pulled fenders, removed fender liners, etc...)

    I'm pretty curious about Ghery's 12.5" rear setup, but he's keeping the specs secret


  14. #39
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    Quote Originally Posted by paul4223 View Post
    Would any discussion of spacers be appropriate to this thread or are there too many variables?

    TIA
    Spacers are more of a band-aid to incorrect fitment wheels, I think the goal of this thread is to achieve ideal fitment without spacers.

    Theres not much to be discussed regarding spacers, but im sure if you have nice fitment with spacers we would love to hear your specifications and spacer info.

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  15. #40
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    Please include a noobie explanation of what each term means and how each variable changes with wheel size. I think I know what they all mean but I wouldn't feel comfortable calling up someone to order anything.
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  16. #41
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    Quote Originally Posted by blackxs

    Spacers are more of a band-aid to incorrect fitment wheels, I think the goal of this thread is to achieve ideal fitment without spacers.

    Theres not much to be discussed regarding spacers, but im sure if you have nice fitment with spacers we would love to hear your specifications and spacer info.
    Yeah, ideal offsets are ideal offsets, regardless if spacers are used to achieve that, or if you're using custom 3 piece wheels, so there's not a lot of worthwhile discussion regarding spacers


  17. #42
    Terry F.'s Avatar
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    Wow, great responses, thank you.

    I envision this as a pretty basic document particularly if I have to maintain it. So besides what listed below, I think I will add some links and maybe embelish the text a bit. I like the idea of Known Working Offsets to list a mild, average and maxed-out example, for say...16-19". Before we define that, please continue to supply (formatted) info on your set-up.

    Suspension. Yeah, fit/no fit data is based around a given suspension set-up but there are too many variables. Maybe we can include that in a suspension sticky at a later date.

    Pictures, Yes. I'd be looking for pics that capture different drops and wheel gaps. Detailed info on the set-up is required.

    ----------------------------------------------------------------------
    Stock Offsets

    16x7 ET46 225/50-16 F&R (standard all non-M '96-'02 except 3.0i - that's '96-'98 1.9, '97-'00 2.8, '99-'00 2.3, '01-'02 2.5i)
    ---------------
    17x7.5 ET41 225/45-17 F (standard '01-'02 3.0i, optional elsewhere)
    17x8.5 ET41 245/40-17 R
    ---------------
    17x7.5 ET41 225/45-17 F (standard '99-'02 M)
    17x9 ET8 245/40-17 R

    General

    Front fitment on all Z3s is the same.
    Rear fitment:
    -4cyl = narrow fenders + short axles
    -6cyl = wider fenders + longer axles
    -M = wider fenders + short axles


    Known Working Packages
    1) M-Roadster (front) 18x8.5 et+32 235/40-18 (rear) 18x10.5 et+14 295/35-18 tire. Fender roll might be necessary.

    2)
    M-Roadster (front) 17x8.5 et+40 255/40-17 (5mm spacer) (rear) 7x8.5 et+40 255/40-17 (30mm spacer). TCKline SA coilovers. Will Rub the front Fender liner a bit!

    3) M-Roadster (front) 18x8.5 et+43-10mm spacer to +33mm et, 255/35-18, (rear) 18x10.5 et+30-18mm spacer to 12mm +et, 295/30-18, TCKline D/A with TCK camber/caster plates, slight rub on front liners.

    4) M Coupe (front) 18x8 et35 245/35-18, (rear) 18x11 et13 295/30-18, TCK S/A coilovers. No rubbing, no spacers.

    5)

    etc.

    -------------------------------------------------------------------

    Terry

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  18. #43
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    I has no spacers

  19. #44
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    Quote Originally Posted by 2000mkoop View Post
    I'm pretty curious about Ghery's 12.5" rear setup, but he's keeping the specs secret

    But then it wouldn't be fair to someone else that wants go through the fitment process


    18x9.5s in the front, 18x12.5s in the back here

    My offsets are mostly to clear my brakes, so me posting them wouldn't really matter anyway

  20. #45
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    Quote Originally Posted by Ghery View Post
    But then it wouldn't be fair to someone else that wants go through the fitment process


    18x9.5s in the front, 18x12.5s in the back here

    My offsets are mostly to clear my brakes, so me posting them wouldn't really matter anyway
    lol well then, since it wouldn't really matter....i guess you'll be posting offsets?

    what size lip is on the rear? pure craziness


  21. #46
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    well this is what I'm running for what its worth... had to do with what the wheel sizing is...

    M Coupe (Front) 18x8 et 49, 10mm spacer 245/35-18 (rear) 18x10 et 24, 5 mm spacer, 285/30-18 HR/Bilstien



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  22. #47
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    T T T.... bumped

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  23. #48
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    Im running CCW LM20's. Suspension is KWV3 coil over at front. Front is 18x8et32 235/40-18. Rear is 18x11.5et24 315/30-18. At the rear I had to take some material off the trailing arm and the inner part of the liner at the back to clear the tyres. Fronts clear the coil overs by a few mm. No spacers fitted. Car is Z3M 1998.

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  24. #49
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    Material off the physical trailing arm? Seems like a bad compromise...

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  25. #50
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    Quote Originally Posted by Z3speed4me View Post
    Material off the physical trailing arm? Seems like a bad compromise...
    Sounds entirely unsafe to me

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