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250 GTO wheels

Discussion in 'Vintage (thru 365 GTC4)' started by ag512bbi, Dec 19, 2019.

  1. Edward 96GTS

    Edward 96GTS F1 Rookie
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    armen, what size tires?
     
  2. ag512bbi

    ag512bbi F1 Veteran
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    I have 215 on my Daytona with 15×8.
    Is that what you'd reccomend?
     
  3. Edward 96GTS

    Edward 96GTS F1 Rookie
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    225 on the rear might look really good but would have to see a side by side comparison. the 8” rim width can easily handle a 225.
     
  4. miurasv

    miurasv F1 Veteran

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    What was the actual confusion?
     
  5. ag512bbi

    ag512bbi F1 Veteran
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    #30 ag512bbi, Dec 29, 2019
    Last edited: Dec 29, 2019
    My Uncle just purchased a Daytona with borrani wheels for a 250 GTO. We did not like the way the car sat. Here is a photo of his Room wheel.
    He will be purchasing either 15×7.5 or if he can find some 15×8 Borranis.
     

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  6. ag512bbi

    ag512bbi F1 Veteran
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  7. Terra

    Terra Formula 3
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    Or you could do Borranis in 8J x 15 front + 9J x 15 rear.
     
  8. miurasv

    miurasv F1 Veteran

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    What is the Borrani RW number and size of the wheel(s)?
     
  9. Edward 96GTS

    Edward 96GTS F1 Rookie
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    original daytona borranis did not have the raised/round portion where the spoke inserts into the rim.
     
  10. ag512bbi

    ag512bbi F1 Veteran
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  11. ag512bbi

    ag512bbi F1 Veteran
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    Are you saying my Daytona Borranis are not the correct look? I know the size on the originals is 15×7.5 but is the look different also?
    Photo is of my Daytona 15×8
    Image Unavailable, Please Login
     

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  12. Marcel Massini

    Marcel Massini F1 World Champ
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    RW 3715 (15 x 6 1/2") are for the front of a 250 GTO.

    Marcel Massini
     
  13. Marcel Massini

    Marcel Massini F1 World Champ
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    RW 4301 (8 x 15) are for the 365 GTB/4, as are RW 4300 (9 x 15).

    Marcel Massini
     
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  14. Marcel Massini

    Marcel Massini F1 World Champ
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  15. 246tasman

    246tasman Formula 3

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    This isn't correct.
    The J, K, L etc refers to the inside depth of the outer flange, and is nothing to do with the general rim profile. There are no specification letters referring to the latter, but the profiles generally relate to the original Borrani RW numbers.
    Having said this, at Turrino Wheels we sometimes see period Borranis with the same RW numbers but different rim profiles, and even very occasionally with different rim sizes fitted and stamped.
    Also we see the same RW number with both dimpled and undimpled rims.
    The modern Borrani rims are made by a different process entirely than the period rims (spun rather than rolled and welded) and generally have a more rounded profile which is very noticeable once you're aware of this. I believe some new Borrani wheels can now be ordered with the old profile at considerably higher cost.
    I'm surprised the profile difference hasn't yet become a big issue in Concours judging.
     
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  16. 246tasman

    246tasman Formula 3

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    Another difference between period and new Borranis is the way the new stamping has raised edges around the each letter or number, like in the attached photo. Yuk.
    We've never seen this on period wheels, including painted ones that have never been refinished.
     
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  17. Marcel Massini

    Marcel Massini F1 World Champ
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    It HAS, but in the USA only where judging rules are taken much more serious than the rest of the world.

    Marcel Massini
     
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  18. miurasv

    miurasv F1 Veteran

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    #43 miurasv, Dec 30, 2019
    Last edited: Dec 30, 2019
    RW 3715 are also correct for the rear of a 62/3 GTO which also used RW 3711 (15" x 6") wheels at the front.
     
  19. miurasv

    miurasv F1 Veteran

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    Did Ferrari ever supply a new Daytona with these size and reference Borrani wheels and/or would they be considered concours correct?
     
  20. Edward 96GTS

    Edward 96GTS F1 Rookie
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    ^ No
     
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  21. Edward 96GTS

    Edward 96GTS F1 Rookie
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    armen
    your wheels while oversized look correct. your uncles wheels have the raised portion on the rim not found on the 4075
     
  22. miurasv

    miurasv F1 Veteran

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    #47 miurasv, Dec 30, 2019
    Last edited: Dec 30, 2019
    Armen's uncle's wheels are RW 3715, which were used on the front and back of the 250 GTO, and only 6.5" wide, so, stating the obvious, they won't fill the wheel well satisfactorily on a Daytona, although the offset could have a bearing on how far they actually extend outwards. However, they have a polished finish which is not correct for a GTO, so what is the story here and with the polished wheels we sometimes see on GTOs? Is it that some of the original GTO' painted wheels have had the paint stripped off and then polished or chrome plated? As the reference numbers stamped on the edge of the rims on some of these cars can't be seen, I suspect they've been plated over or polished off. Although Ferrari only supplied the GTOs with painted wheels, did (or do) Borrani make the correct reference GTO wheels in a polished or chrome plated finish too?
     
  23. Edward 96GTS

    Edward 96GTS F1 Rookie
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    agree, the gto wheels are totally wrong.
     
  24. miurasv

    miurasv F1 Veteran

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    If you put bigger tyres on whichever wheels the speedo is connected to, it will affect its accuracy.
     
  25. DWR46

    DWR46 Formula 3
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    Borrani will produce wheels in either painted or polished as the customer requests.
     
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