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Thread: What size wheel spacers is everyone using?

  1. #1
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    What size wheel spacers is everyone using?

    I have these 18x8.5 +20mm front wheels, and 18x9.5 +25mm rear wheels. They still seem to set in just a bit, and I was looking at the 30mm and 20mm spacers, and was curious what others people opinions as to the best fit with wheels spacers...







    I have lowering springs for the, and they are obviously not installed in the pics yet.. So I will need some spacers size that will work with the lowering springs..
    Last edited by Iamtheonlyreal1; 08-12-2011 at 10:34 PM. Reason: Automerged Doublepost

  2. #2
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    spacers

    I think you are thinking too big, especially when lowered.
    I have stock M-Pars 18x8 13et front and 18x9.5 et 24 rear and run 12.5mm all around.
    ECS spacers w/bolts which are quality and reasonably priced.
    http://www.ecstuning.com/BMW-E92-335...cers/ES205205/





    OEM e38 M-Pars refinished Hypersilver with Michelin PS2's 245/40/18 front and 265/40/18 rear, DRT drilled and slotted rotors, Hawk racing pads, Blue racing brake fluid, stainless braided flex lines, Brake Bomb, e36-Sport steering wheel w/airbag, tranny filter/pan seal, 88,000 miles and always more to do.

  3. #3
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    30mm spacers are massive and will add vibration to your ride. Personally, if I were to run spacers, I'd go with the rogue engineering ones (available in 10-18mm) because they are lightweight, hub centric, and have a bevelled edge to pry them off your rotor hat if and when they seize on.

    One thing I regularly do to help prevent that from happening is use a wire brush wheel on a drill and brush all of the rust off my wheel mounting faces and brake rotor hats, then generously apply some anti-seize compound (I use a Loctite-branded copper-based anti-seize lubricant).
    1991 BMW 850i / V12 5.0L [M70] / ZF4HP24 E/H

  4. #4
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    Quote Originally Posted by renegadevtwin View Post
    I think you are thinking too big, especially when lowered.
    I have stock M-Pars 18x8 13et front and 18x9.5 et 24 rear and run 12.5mm all around.
    ECS spacers w/bolts which are quality and reasonably priced.
    http://www.ecstuning.com/BMW-E92-335...cers/ES205205/







    So, I am needing about an 18mm for the front, and about a 12mm for the rear to be set about the same as you are sitting here?

  5. #5
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    I used the 1010 wheel offset calculator and 12.5mm would put your half inch wider wheel all on the inside, thus same on the outside.
    So my original guess was right on. Try this calculator: http://www.1010tires.com/wheeloffsetcalculator.asp


    OEM e38 M-Pars refinished Hypersilver with Michelin PS2's 245/40/18 front and 265/40/18 rear, DRT drilled and slotted rotors, Hawk racing pads, Blue racing brake fluid, stainless braided flex lines, Brake Bomb, e36-Sport steering wheel w/airbag, tranny filter/pan seal, 88,000 miles and always more to do.

  6. #6
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    Quote Originally Posted by renegadevtwin View Post
    I used the 1010 wheel offset calculator and 12.5mm would put your half inch wider wheel all on the inside, thus same on the outside.
    So my original guess was right on. Try this calculator: http://www.1010tires.com/wheeloffsetcalculator.asp

    I tried it.. So, you are interpretting that the same 12.5mm spacers would be the same result as the wheel postion in the pics of your car? So, I would only need the 12mm spacers..?

  7. #7
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    I'm running 8.5x18 et 13 fronts and 10X18 et 20 rears. I have 15mm spacers up front and 10mm in the rear. No vibration issues, but I did have to modify the rear fenders to get rid of a bit of rubbing.



  8. #8
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    Quote Originally Posted by Iamtheonlyreal1 View Post
    I tried it.. So, you are interpretting that the same 12.5mm spacers would be the same result as the wheel postion in the pics of your car? So, I would only need the 12mm spacers..?
    Yes, My initial guess was as correct as the math formula used in the calculator. So your 8.5 inch wheel with 20et and a 12.5 spacer would sit exactly the same place as mine on the outside. While being 12mm or about 1/2 inch closer to the strut on the inside. No Interpretation.


    OEM e38 M-Pars refinished Hypersilver with Michelin PS2's 245/40/18 front and 265/40/18 rear, DRT drilled and slotted rotors, Hawk racing pads, Blue racing brake fluid, stainless braided flex lines, Brake Bomb, e36-Sport steering wheel w/airbag, tranny filter/pan seal, 88,000 miles and always more to do.

  9. #9
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    No spacers with Alpina!
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  10. #10
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    No spacers with Alpina!
    +1

  11. #11
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    91 850 Panzer
    No spacers with my MK I's either. ET is 5mm Front & 21mm Rear.
    91 850 (Panzer), 2012 Mini Cooper Countryman (WifeMobile) www.wuffer.ca


  12. #12
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    Got it lowered, and I have my spacers on the way.. I have the Magnaflow with X-pipe done, and removed the resonators, which sounds perfect. The Wokke Chips, I have a Dinan Trans Chip coming, Drilled Rotors on the way.

    I have been debating on the body kit, but can seem to make myself pull the trigger on it..






  13. #13
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    Looks way better lowered!

  14. #14
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    none with ET6 all around


  15. #15
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    What size hole in the x-pipe if you don't mind sharing? This has quite an effect on torque.

  16. #16
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    Quote Originally Posted by sleepy81 View Post
    What size hole in the x-pipe if you don't mind sharing? This has quite an effect on torque.
    Not sure of the actual size of the hole.. We bent two pieces of 2.5 inch pipe, so they would come together in about a 5 inch length connection.. We then cut each side of the pipe in that 5 inch run so they would fit together, and then welded them toegher.. If I had to guess I would say the hole was about 2"+ tall and about 4.5" long.. It worked real well, and sounds great..
    Last edited by Iamtheonlyreal1; 09-12-2011 at 10:59 AM.

  17. #17
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    Quote Originally Posted by Iamtheonlyreal1 View Post
    I have these 18x8.5 +20mm front wheels, and 18x9.5 +25mm rear wheels. They still seem to set in just a bit, and I was looking at the 30mm and 20mm spacers, and was curious what others people opinions as to the best fit with wheels spacers...







    I have lowering springs for the, and they are obviously not installed in the pics yet.. So I will need some spacers size that will work with the lowering springs..
    your offsets are too high to begin with if you want the flush look

    I am always a fan of getting the appropriate offset as opposed to screwing around with spacers.
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  18. #18
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    AC Schnitzer Type II fitment came with Spacers....

    Front: 19x8.5 et 9 (with 6mm spacer)
    Rear: 19x9.5 et 6 (with 15mm spacer)

    Vibrations: None!
    E31 M73 Forever

  19. #19
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    '91 850i -CB72257 'Ruby'

    No spacers with E31 specific M System IIs...but then again I'm not looking to fill the wheel well up too much.
    8 x 17 fronts w/245x45x17 (10mm ET)
    9 x 17 rears w/275x40x17 (19mm ET)

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    Last edited by BCinPhx; 09-12-2011 at 03:22 PM.
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  20. #20
    Mark850's Avatar
    Mark850 is offline Life begins at 145mph.... Moderator
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    91 850i/'67 Nova SS
    HRE Comp90 3pc forged.

    9.5 X 19 Front 245/35/19
    11.5 X 19 Rear 295/30/19

    No spacers, custom offsets and hub bores..E31 specific.
    No rubbing..


    @OP..Be careful on the type of body kit you choose. If you go ACS like mine, you'l destroy it within an hour being that low upfront. Just my $0.08


    Last edited by Mark850; 09-12-2011 at 03:45 PM.



    1991 850i,80k miles,Wokke2000 Software,M3 Style Trunk Lip Spoiler,35% Tint,Zimmerman Cross Drilled Rotors,Limiters Disabled,1.5 inch Drop,AC Schnitzer Lower Front Spoiler,Mark850 design Roof Spoiler,HRE Comp90 Wheels 19x11.5 & 19x9.5, 295/30/19 245/35/19, Dinan Stage 2 Adjustable Sway Bars.

  21. #21
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    Quote Originally Posted by Mark850 View Post

    DAMN MARK! That's just beautiful.

  22. #22
    Mark850's Avatar
    Mark850 is offline Life begins at 145mph.... Moderator
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    Quote Originally Posted by Imndeep View Post
    DAMN MARK! That's just beautiful.
    Thank you. Would you believe that picture was taken by a kid who does natural light with NO enhancements or photoshop pictures.



    1991 850i,80k miles,Wokke2000 Software,M3 Style Trunk Lip Spoiler,35% Tint,Zimmerman Cross Drilled Rotors,Limiters Disabled,1.5 inch Drop,AC Schnitzer Lower Front Spoiler,Mark850 design Roof Spoiler,HRE Comp90 Wheels 19x11.5 & 19x9.5, 295/30/19 245/35/19, Dinan Stage 2 Adjustable Sway Bars.

  23. #23
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    Quote Originally Posted by Mark850 View Post
    Thank you. Would you believe that picture was taken by a kid who does natural light with NO enhancements or photoshop pictures.
    The kid is off to a great start career-wise if you ask me... Not that I know anything about these kinda careers hehe
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  24. #24
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    '00 Z3C, '70 XJ6
    30mm (et -3) front and 15mm (et +12) rear, no wobbles. Good spacers shouldn't cause vibrations..

    2.8 Z3 coupe + 6 speed || 200kW electric 1970 Jaguar XJ6

  25. #25
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    RONDELL Type 58

    18" x 9" with 245/40/18 Front
    18" x 10.5" with 285/35/18 Rear

    No spacers, no rubbing...
    '93 850Ci - Mineralweiss Metallic
    ALPINA B7 -Alpinweiss III

    BMWCCA E31 Chapter President



    ...the price of cool ain't cheap!

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