Ferrari mondial , Offset, tires, The final Thread!! | FerrariChat
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Ferrari mondial , Offset, tires, The final Thread!!

Discussion in 'Mondial' started by BlackMondial32, Nov 25, 2012.

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  1. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
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    #1 BlackMondial32, Nov 25, 2012
    i tryed to search in all the forum, i read a lots of number, pictures but not a CLEAN infos about all mondials wheels info, i have to change my wheels and i dont understand nothing, too much numbers!! ( i read +43+50+60 et :O) im confused about my mondial 3.2 abs

    well, who knows, can write here these infos >

    About OFFSET , Wheels Measures, etc (for the who have to change wheels,rims etc)

    Mondial 8
    Mondial 4v
    Mondial 3.2 Pre Abs
    mondial 3.2 ABS
    mondial T

    thanks to all
     
  2. Jeka

    Jeka Formula 3
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    #2 Jeka, Nov 25, 2012
    Mondial 3.2 ABS (TRX)

    Front : 160 mm, ET 43.5 mm
    Rear : 180 mm, ET 53.5 mm

    Mondial T 16"

    Front : 7", ET 50.8 mm (138857)
    Rear : 8", ET 51.0 mm (137087)
     
  3. afterburner

    afterburner F1 Rookie
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    #3 afterburner, Nov 26, 2012
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  4. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
    244
    #4 BlackMondial32, Nov 26, 2012
    well all the reproduction are 51 offset ? 4 wheels ?
    yes, but important i need

    rear 8j and front 7j

    but i cant find the CENTER BORE , for any aftermarket wheels

    Centerbore

    The centerbore of a wheel is the size of the hole in the back of the wheel that centers it over the mounting hub of the car. Some factory wheels have a centerbore that matches exactly with the hub to reduce vibration by keeping the wheel centered. Wheels with the correct centerbore to the car they will be mounted on are known as hubcentric. Hubcentric wheels take the stress off the lug nuts, reducing the job of the lug nuts to center the wheel to the car. Wheels that are not hubcentric are known as lugcentric, as the job of centering is done by the lug nuts assuming they are properly torqued down.
    Centerbore on aftermarket wheels must be equal to or greater than that of the hub, otherwise the wheel cannot be mounted on the car. Many aftermarket wheels come with "hubcentric rings" that lock or slide into the back of the wheel to adapt a wheel with a larger centerbore to a smaller hub.[3] These adapters are usually made of plastic but also in aluminum.
     
  5. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
    244
    #5 BlackMondial32, Nov 26, 2012
    do u have now 4 wheels ? et17 16x7 ?
     
  6. afterburner

    afterburner F1 Rookie
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    #6 afterburner, Nov 26, 2012
    4 of the same as pictured.
    205/55 at the front, 225/55 at the rear.

    I don't know the dimensions other reproduction wheels.
     
  7. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
    244
    #7 BlackMondial32, Nov 26, 2012
    yes
    original was 8 rear and 7 front

    but 7 can mount 255 and 205 the same

    original was 43.5 front and 51 rear (mondial 8,4v)

    they solve with 51 for all 4 wheels

    now we need to know the center rube for a final replacement dates for aftermarket wheel
     
  8. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
    244
    #8 BlackMondial32, Nov 27, 2012
    nobody can help me??
     
  9. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    #9 Steve Magnusson, Nov 27, 2012
    Last edited: Nov 27, 2012
    This thread:

    http://www.ferrarichat.com/forum/showthread.php?t=8361

    post #31 indicates that the Mondial 3.2 has the same 67mm hub diameter as most F of that era (but the offsets given don't quite match those given by Johan, but they do match the offset values that you posted).
     
  10. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
    244
    #10 BlackMondial32, Nov 27, 2012
    hi steve thank u!
    i have the 5 wheel inside the front bonnet
    i try to misure the hube, but very hard because not enough space inside
    but maybe its less than 67 mm
    i have to remove one wheel and misure the hube on the car
    what do u think about?

    my mondi is 3.2 abs 88
     
  11. afterburner

    afterburner F1 Rookie
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    #11 afterburner, Nov 27, 2012
    Mondials QVs delivered with 240/55VR390 TRX tires on all corners have identical rims on both axles. The five rims delivered with the car are "Ferrari 390TR180" Cromdora alloys and have an offset of 55mm, to my knowledge. The bolt pattern is 5x108. The 240/55VR390 rim/tire combination weighs 20.5kg. There were also Campagnola and Speedline TRX rims on the Mondial 8 and 3.2.
     
  12. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
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    #12 BlackMondial32, Nov 28, 2012
    ok this website confuse and help me both :

    http://www.tyresave.co.uk/alloyjag.html




    Replica Ferrari
    Alloys for Mondial
    Including Ferrari Logo as illustrated
    designed to use original bolts 7 x 16" [front]
    5 x 108 PCD, ET+51mm
    110mm backspace, 58.1/67.1 centre bore
    £225
    each
    8 x 16" [rear]
    5 x 108 PCD, ET+51mm,
    165mm backspace, 67.1 centre bore

    each
    Complete set of four 16"
    (2 x 7 x 16" + 2 x 8 x 16")

    _____________

    well the centre bore is 58 or 67 :O ????
     
  13. afterburner

    afterburner F1 Rookie
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    #13 afterburner, Nov 28, 2012
    What is "backspace"?
     
  14. soucorp

    soucorp F1 Rookie

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    #14 soucorp, Nov 28, 2012
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  15. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    #15 Steve Magnusson, Nov 28, 2012
    Last edited: Nov 28, 2012
    It's not a typo. On the earlier cars (QV and before), with the cylindrical tapered wheel bearing at the front, the (smaller diameter) front hubs sticks way out -- so the wheels have two hub diameters (a ~58 mm deep hole that gets used at the front and a shallower ~67mm counterbore that gets used if the wheel is at the rear).

    On the later cars (Like Joey's or your 3.2) with the two-row ball bearings at the front, I think they went away from this and just use the 67 mm hub size at both front and rear.
     
  16. soucorp

    soucorp F1 Rookie

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    #16 soucorp, Nov 28, 2012
    U Da Man Steve, learn something new everyday on this board.
     
  17. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    #17 Steve Magnusson, Nov 28, 2012
    Yes, it is/was a clever design solution IMO that allowed the same wheel to be used at front and rear on the early 308 while not having an overly large flat area on the wheel nor a lot of extra, unneeded metal on the rear axle. The problem with the cylindrical tapered roller bearing design is that the outboard bearing actually sits far outboard of the wheel mounting surface, so in order to fit everything you need inside the lugbolt heads (like reasonable material thicknesses ;)), it requires this hub diameter to be restricted. When they went to the two-row ball bearing, everything is packaged much more inboard of the wheel mounting suface so it gives the wheel and suspension designers more freedom.
     
  18. afterburner

    afterburner F1 Rookie
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    #18 afterburner, Nov 28, 2012
    Last edited by a moderator: Sep 7, 2017
    Mike thanks for posting those pictures.... I actually know what back space normally is, but those reproduction wheel numbers are incoherent, aren't they? The only difference between the front and the rear wheel in terms of overall dimensions is the rim's width, 1 inch wider in the back, of which half (±12mm) is on the "back side" (since the offset is still 51).
    Shouldn't the difference between the front and rear rim's backspace dimension be 1/2 an inch? The ad states about 2 inches (165-110=55).

    I revise my earlier offset statement from 55 to 51mm, apologies. The TRX 390TR180 backspace is ± 155mm, the centre bore as Steve described it, stepped from 67 to 58. Here some pics of an '83 Euro QV, including the front and rear hubs:
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  19. BlackMondial32

    BlackMondial32 Karting

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    #19 BlackMondial32, Nov 30, 2012
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  20. Burch1

    Burch1 Formula 3

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    #20 Burch1, Nov 30, 2012
  21. soucorp

    soucorp F1 Rookie

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    #21 soucorp, Nov 30, 2012
    Last edited by a moderator: Sep 7, 2017
    Wonder how it will look on your car???
    You might want to paint the calipers also (Black, Red, or Yellow).
    Do post some pics when its on the car.

    Cheers.
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  22. soucorp

    soucorp F1 Rookie

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    #22 soucorp, Dec 1, 2012
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  23. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
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    #23 BlackMondial32, Dec 1, 2012
    my mondial is black, nero tropicale
    i would paint the wheels in classic ferrari alluminio paint
    and the caliper red!

    i put the original wheels with trx in my garage, stored for classic concorso car
     
  24. BlackMondial32

    BlackMondial32 Karting

    Aug 27, 2007
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    #24 BlackMondial32, Dec 5, 2012
    rims are here!
     
  25. soucorp

    soucorp F1 Rookie

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    #25 soucorp, Dec 7, 2012
    Last edited: Dec 7, 2012
    This weekend we'll see them on your car? Looking forward to it.

    cheers
     
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