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Modern Ferrari Wheel offsets

Discussion in 'Ferrari Discussion (not model specific)' started by Auraraptor, Feb 11, 2004.

  1. Auraraptor

    Auraraptor F1 World Champ
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    #1 Auraraptor, Feb 11, 2004
    Last edited: May 17, 2009
    Ok here it is for future reference:

    Pre ABS 328:
    7in Front is 15.15
    8in Rear is 15.45

    328 ABS: 7" 38mm Front; 8" +63.5mm Rear

    348: Front (?); 9" +68 Rear
    355: Front (?); 10" +78mm Rear

    360: 7.5" +31.5mm Front; 10" +39mm Rear
    360 Modular wheel: 7.5" +31.5 Front; 10" +38.95mm Rear

    I also have the F512M around here somewhere, 512TRs are the same as it, and the F550 uses the same front offset..

    Come on guys help me out with the missing ones so from now on we have a source with all of them.
     
  2. zsnnf

    zsnnf Formula 3

    Sep 11, 2003
    1,877
    What about the F40?
     
  3. Auraraptor

    Auraraptor F1 World Champ
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    #3 Auraraptor, Feb 11, 2004
    Last edited by a moderator: Sep 7, 2017
  4. Auraraptor

    Auraraptor F1 World Champ
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    550: 32mm rear offset.
     
  5. Auraraptor

    Auraraptor F1 World Champ
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    355 Speedlines: 8" Front with +60mm offset, 10" Rear with +80mm offset.
     
  6. Auraraptor

    Auraraptor F1 World Champ
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    328 is 63.5mm offset in the rear! Sorry, for the oversite.
     
  7. Auraraptor

    Auraraptor F1 World Champ
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    308/328 PRE ABS: 7" with +11mm Front; 8" +11mm Rear
    328 ABS: 7" with +38mm Front; 8" +63.5mm Rear
    348: 7.5" +49 Front; 9" +68 Rear
    355: Front (?); 10" +78mm Rear
    355 Speedlines: 8" +60mm Front; 10" +80mm Rear
    360: 7.5" +31.5mm Front; 10" +39mm Rear
    360 Modular wheel: 7.5" +31.5mm Front; 10" +38.95mm Rear

    F512M: 8" +46mm Front; 10.5" +81.75mm Rear
    F550: 8.5" +43.65mm Front; 10.5" +32mm Rear
     
  8. Auraraptor

    Auraraptor F1 World Champ
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    Ferrari 456GT

    Fronts: 8.5" wide x 17 with +50 mm
    Rears: 10" wide x 17 with +24.6 mm
     
  9. mk e

    mk e F1 World Champ

    Oct 31, 2003
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    550 is 8.5" +46mm front, 10.5" +32mm rear

    ...it looks like you need a set of 348 or maybe 355 wheels for your baby :)
     
  10. GTB4NART

    GTB4NART Formula Junior

    Jan 17, 2004
    421
    I guess I don't understand why people say that 550 wheels are interchangeable with 456 wheels? The numbers tell a different story.

     
  11. Auraraptor

    Auraraptor F1 World Champ
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    Actually if the numbers for the 456 are right (which I got off of ebay from an unknown source, so I do not trust them as much as I do the others)

    The effect of putting smaller offset wheel on your large offset hub will cause an spacer effect (4mm each side) similar to as if you had spacers for the difference (conversely larger offset wheels on a normally smaller offset using hub means you need spacers to make up the difference, like a 308 with its 12 putting on 360 with its larger offset). Compare the following numbers: (width x 25.4)/2 - offset) for the two cars.

    Thus, yes the front DO INDEED work, with a 4mm spacer effect on each side.

    The rears would be 101.35 (550) to 102.4 (456) = also next to nothing.

    Thus YES the numbers say the wheels DO work.

    Sorry I did not check this thread earlier.
     
  12. shelbee

    shelbee Guest

    what do you mean by 4mm spacer effect on each side?? shelbee
     
  13. Auraraptor

    Auraraptor F1 World Champ
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    Installing the wheels on your car will have the effect of 'outspacing' the wheel by 4mm. In other words the final result of installing the wheel will be the same as if you kept your stock wheels and added 4mm spacers on each side. This is due to the center offset differences between the two wheels.

    As for the bolts to use, use the quick bolt check technique..ie, stick the OEM 550 bolt in the 550 wheel and measure how much sticks out inside the wheel. Then do the same with a 456 wheel. The value needs to be very similar (with in a few mm) If it is too long, the wheel will not move, if too little the wheel will fall off.
     
  14. Mike C

    Mike C F1 Veteran
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    I know you've rounded, but the EXACT offsets for the 16" Cromodora 308QV wheels are:
    Front: +11.15 mm (7" wheels)
    Rear: +11.45 mm (8" wheels)
     
  15. Markie1949

    Markie1949 Karting

    Apr 4, 2005
    82
    Utah

    I'm confused, smaller offset hub vs. larger offset. My reading of the data you provided[thanks] seems to indicate that the front wheels from a 456 would work very well on a 348, but the backs wouldn't, or do you also need to know the offset of the hubs on your particular car. I'm looking for something to replace the stock 348 wheels [cause I think they are clunky looking] but mass confusion rules, and there are some tasty looking 456 rims on Epay. Can you help? thanks.
     
  16. PassionIsFerrari

    PassionIsFerrari Formula 3

    Aug 15, 2004
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    So if you put a 360 rear wheel on the back of a 348....the offset is different by 29mm....how does the 10 inch wheel compare to the 9 inch wheel...does this space the wheel out another 1 inch? another 1/2 inch? or does the offset already compensate for increased width of the wheel?
     
  17. Steve Magnusson

    Steve Magnusson F1 World Champ
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    The offset value is independent of wheel width so the outboard wheel edge of a 10" wheel would be moved out another 1/2" (relative to a 9" wheel).
     
  18. PassionIsFerrari

    PassionIsFerrari Formula 3

    Aug 15, 2004
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    So it would be like putting a 41.7mm spacer on the 348 rear wheel...is this correct?
     
  19. Steve Magnusson

    Steve Magnusson F1 World Champ
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    Yes, the outboard edge of the 10" 360 rear wheel would be in the same position as when a 41.7 mm spacer is added to the stock 348 rear wheel.

    (And the inboard edge of the 10" 360 rear wheel would be in the same position as when a 16.3 mm spacer is added to the stock 348 rear wheel.)
     
  20. uzz32soarer

    uzz32soarer F1 Rookie
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    Testarossa offsets

    Front 16 x 8 inch with a +34.2mm offset
    Rear 16 x 10 inch with a + 59.6mm offset

    Centre mount hole 67.1mm

    348 offsets

    Front 17 x 7.5 inch with a + 49mm offset
    Rear 17 x 9 inch with a + 68mm offset

    Centre hole 67.1mm

    355 Spider offsets

    Front 18 x 7.5 inch with a + 32mm offset
    Rear 18 x 10 inch with a + 52mm offset
     
  21. dasadrew

    dasadrew Formula Junior

    Aug 1, 2004
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    348 offsets

    Front 17 x 7.5 inch with a + 49mm offset
    Rear 17 x 9 inch with a + 68mm offset (early US and all other markets) F136547 + F136538
    Rear 17 x 9 inch with a + 43,05mm offset (late US and US Spider) F156242 + F156244
     
  22. cwwhk

    cwwhk Formula 3

    Nov 13, 2003
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    #22 cwwhk, Sep 10, 2006
    Last edited by a moderator: Sep 7, 2017
  23. Auraraptor

    Auraraptor F1 World Champ
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    Thank you! Correction Noted.
     
  24. cwwhk

    cwwhk Formula 3

    Nov 13, 2003
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    You're welcome. And thank you for starting this very useful thread. I am thinking of ordering a set of BBS LM wheels for the 550. Retailer shows LM front offset at only 25mm. Now, that's a big difference with the 46mm you listed before. So out of curiosity I took my OEM wheels off to double check and found the slight discrepency.

    I tried the rear OEM wheels with 32mm offset on the front. Despite being 10.5" wide with 295/35-18 tire and 11.65mm less offset, the rear will fit at the front if I give it a bit more negative camber.

    550 being so front heavy I think its handling will improve a lot if I widen the front track with less offset. So now I may just get a pair of OEM rears to use at the front instead of buying a set of LM.
     
  25. Javelin276

    Javelin276 Formula Junior

    Jan 16, 2005
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    Thor Zollinger
    Here's one you missed:

    Mondial-8 55mm offset Alloy 390 x 180mm wheels
    (Michelin TRX 240/55 VR 390 tires)
     

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