News

250 GTO wheels

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

  1. ag512bbi

    ag512bbi F1 Veteran
    Rossa Subscribed Owner

    Nov 8, 2003
    6,177
    So. Cal
    Full Name:
    Armen
    What size wheels did the 250 GTOs leave the factory with?
    Those cars today, do they have Borranis? Did they race with "spoke" wheels? Were they fragile?
    Someone please give me a quick lesson on this please.
     
  2. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    #2 miurasv, Dec 19, 2019
    Last edited: Dec 19, 2019
    1962/3 250 GTO S1.

    15 x 6L Borrani RW3711 Front.
    15 x 6.5L Borrani RW 3715 Rear.

    1964 250 GTO S2.

    15 x 6.5L Borrani RW3715 Front.
    15 x 7.5L Borrani RW3806 Rear.

    All spoked.
     
    of2worlds likes this.
  3. ag512bbi

    ag512bbi F1 Veteran
    Rossa Subscribed Owner

    Nov 8, 2003
    6,177
    So. Cal
    Full Name:
    Armen
    Interesting. Thank you.
    There was confusion regarding a Daytona with "GTO" wheels that I saw.
    This clears it up
     
  4. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    #4 miurasv, Dec 19, 2019
    Last edited: Dec 19, 2019
    Other sources state the rear wheels of the 1964 S2 250 GTO were actually 15 x 7.5L Borrani RW 3808, NOT RW 3806.
     
  5. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    #5 miurasv, Dec 19, 2019
    Last edited: Dec 19, 2019
    The Borrani website states the wheels for 250 GTO 1962-1964 are:

    6.00 x 15 RW 3690.

    6.00 x 15 RW 3711.

    6.50 x 15 RW 3715.

    6.50 x 15 RW 3801.

    7.50 x 15 RW 3808.

    The site is very confusing. It does not specify if they have painted or polished aluminium rims, although it shows a picture of a RW 3812 7.00 x 15 wheel, which is not for a 250 GTO, with a polished rim, for all sizes.
     
  6. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    The Bluemel/Pourret 250 GTO book states that as original equipment all 250 GTOs had Borrani wire wheels with 42mm Rudge hubs, with steel spokes and aluminium rims painted silver which featured chrome plated triple ear knock off retaining nuts.
     
    of2worlds, Edward 96GTS and readplays like this.
  7. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    1,217
    Steve: The Borrani website has so much stuff wrong! Please do not use it as a "fact" source. No GTO was ever built with either RW3690 or RW3801 wheels. Remember, the Borrani company of today is NOT the same company of the 1950-70 era. While they do try, they do not fully understand what they have of the old archives. If you think they have problems sorting out the older Ferrari's, just try them with the Maserati race cars!
     
    of2worlds, 375+, Lusso123 and 2 others like this.
  8. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    #8 miurasv, Dec 19, 2019
    Last edited: Dec 19, 2019
    I appreciate you chiming in, Dyke, as I know others do, and not just to this thread, so thank you for your experienced contributions.

    I did wonder about the accuracy of the information on the Borrani web site, particularly the RW3690 and RW3801 references.

    As far as you are aware, Dyke, is the following info correct?

    1962/3 250 GTO S1.

    15 x 6L Borrani RW3711 Front.
    15 x 6.5L Borrani RW 3715 Rear.

    1964 250 GTO S2.

    15 x 6.5L Borrani RW3715 Front.
    15 x 7.5L Borrani RW3808 Rear.

    Also, I do see 250 GTOs with polished rims, so are they actually correct, or, as the Bluemel and Pourret book says, is it the case that they were all supplied as OE with silver painted aluminium rims?
     
  9. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    1,217
    Steve: Your wheel information in Post #8 is correct. This is actually not an easy question to answer, as the Factory Build Sheets for GTO's do NOT list wheel size or RW number. They only list the Dunlop tire sizes. I actually had to go look at the cars to make sure. My belief is the Series 1 cars were all built with the same wheels and the Series 2 cars were built with the later spec wheels, but these were race cars, and as soon as something new was available that made the car go faster, most GTO's would have been upgraded to the later wheel combination. As for finish, the wheels were painted from new, not polished. They were aluminum rims.
     
  10. ag512bbi

    ag512bbi F1 Veteran
    Rossa Subscribed Owner

    Nov 8, 2003
    6,177
    So. Cal
    Full Name:
    Armen
    and what does the "L" stand for?
     
  11. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    1,217
    Armen: Over time, tire and wheel manufacturers have established a series of tire bead and rim shapes that have been standardized throughout the industry. These rim shapes are listed by "letter". A "L" shaped rim is of a certain set of dimensions and curves. Some of our GTO wheels are also "K" wheels. I think you can google rim shapes to find more detail on these various wheel rim shapes.
     
    of2worlds likes this.
  12. Longstone Tyres

    Longstone Tyres Formula 3
    Sponsor

    Feb 2, 2006
    1,174
    Full Name:
    Dougal
  13. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    #13 miurasv, Dec 23, 2019
    Last edited: Dec 23, 2019
    Dougal, please see post 7 above by Dyke regarding the 250 GTO never being built with RW3690 and RW3801 wheels.
     
  14. ag512bbi

    ag512bbi F1 Veteran
    Rossa Subscribed Owner

    Nov 8, 2003
    6,177
    So. Cal
    Full Name:
    Armen
    What comes with the Daytona then? Is the GTO's 15×7.5 the same as the Daytona's 15×7.5
     
  15. Edward 96GTS

    Edward 96GTS F1 Rookie

    Nov 1, 2003
    3,363
    daytonas are stamped 4075
     
    of2worlds and miurasv like this.
  16. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    1,217
    The "offsets" are different. The two wheels are not interchangeable.
     
    375+, of2worlds and miurasv like this.
  17. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    #17 miurasv, Dec 24, 2019
    Last edited: Dec 24, 2019
    ...and they look completely different. Correct Borranis on a 250 GTO are painted.

    Rear wheel on 1962 250 GTO 3869 which has been upsized to the 7.5L rim width Borrani RW3808.
    Image Unavailable, Please Login Image Unavailable, Please Login



    Daytona used Borrani RW 4075 below.

    Image Unavailable, Please Login
     
    stevewak and of2worlds like this.
  18. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    #18 miurasv, Dec 24, 2019
    Last edited: Dec 24, 2019
    of2worlds likes this.
  19. stevewak

    stevewak Rookie

    Jul 31, 2006
    40
    UK
  20. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
  21. miurasv

    miurasv F1 Veteran

    Nov 19, 2008
    7,145
    Cardiff, UK
    Full Name:
    Steven Robertson
    250 GTO 4153GT has 15 x 7.5 RW 3808 wheels on the rear.
     
  22. ag512bbi

    ag512bbi F1 Veteran
    Rossa Subscribed Owner

    Nov 8, 2003
    6,177
    So. Cal
    Full Name:
    Armen
    Ok, To high jack my own thread, Where can I find 4 correct Daytona Borranis preferably in the USA?
    Would you recommend 15x7.5 all the way around or prefer 15x8 in the back?
     
  23. Edward 96GTS

    Edward 96GTS F1 Rookie

    Nov 1, 2003
    3,363
    the best look is

    7.5 x 15 front
    8 x 15 rear
    but 7.5 all around is stock original.
     
  24. ag512bbi

    ag512bbi F1 Veteran
    Rossa Subscribed Owner

    Nov 8, 2003
    6,177
    So. Cal
    Full Name:
    Armen
    I actually have 15×8 all the way around on mine.
    I prefer that.
     
  25. Solid State

    Solid State F1 Rookie
    Rossa Subscribed Owner

    Feb 4, 2014
    4,102
    Full Name:
    Ndugu Umbo
    Having to adjust spokes on motorcycles I couldn't imagine the pain in doing so on a car. Probably not of concern to the actual owner of one of these specimens though.
     

Share This Page