Ferrari 275 GT tyres | Page 2 | FerrariChat

Ferrari 275 GT tyres

Discussion in 'Vintage (thru 365 GTC4)' started by Longstone Tyres, Aug 20, 2013.

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  1. miurasv

    miurasv F1 World Champ

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    #26 miurasv, Feb 6, 2021
    Last edited: Feb 6, 2021
    Updating this 2013 thread.

    Short Nose 275 GTB used 60 spoke Borrani RW 3874 wire wheels and Campagnolo Starburst alloys which were both 6.5" x 14" in size.

    The very early Long Nose 275 GTB also used the Campagnolo Starburst alloy wheels in 6.5" x 14 " size as well as the Campagnolo 10 hole alloy design in this size.

    Please see pic below from 6 Carb Alloy Long Nose 275 GTB #08011 showing the 6.5" wide Campagnolo 10 hole alloy design.
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    Later Long Nose 275 GTBs used the Campagnolo 10 hole alloy design in 7.0" x 14" size as well as the 72 spoke Borrani RW 4039 in 7.0" x 14" size.
     
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  2. Edward 96GTS

    Edward 96GTS F1 Veteran
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    Nov 1, 2003
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    great info.
    what about the straight eared knockoffs as seen above vs the curved ear knockoffs?
    also the embossed(raised) horse emblem vs the etched(cut) emblem useage?
     
  3. Longstone Tyres

    Longstone Tyres Formula 3
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    Well this hero drives his 275GTB pretty fast



    I did get him eventually, and arguably i should have made an earlier lunge up the inside earlier, but i'm not that way inclined.
     
  4. 375+

    375+ F1 World Champ
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    275 GTB resto-mod.
     
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  5. miurasv

    miurasv F1 World Champ

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    Further updating the 275 GTB wheels information: I believe that the very early 275 GTB Long Nose also used the 6 1/2" wide Borrani 60 spoke RW 3874 before the 7" wide 72 spoke Borrani RW 4039 was introduced on later Long Nose cars.
     
  6. DWR46

    DWR46 Formula 3
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    Steve: What documentation do you have to support your statement?
     
  7. miurasv

    miurasv F1 World Champ

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    Was Alberto Silvera's special order #07993 originally supplied with wire wheels or alloy wheels? Look on the build sheets for the size of the wheels.
     
  8. DWR46

    DWR46 Formula 3
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    Steve: The Build Sheet for 7993 does show 6.5 in wheels, BUT is does not state which kind. I have never personally seen a Build Sheet for 6.5 inch Wire Wheels on a Long Nose GTB. I have many Build Sheets for early Long Nose cars with 6.5 inch wheels, but they specify Alloy (Fuse) wheels. However, on 7993, the Alestimenti Sheet notes a number of special items including wire wheels. There are numerous instances of disagreements between the Build Sheets and the Alestimenti Sheets, so I cannot say for sure what specific wire wheel was originally on 7993. I personally have not seen a Build Sheet for a Long Nose car that lists RW 3874 or 6 inch wire wheels. I would like to see one if they exist.
     
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  9. Longstone Tyres

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    Hi

    Just a heads up.

    the 205VR14 Michelin XWX has been out of stock for a while.

    https://www.longstonetyres.co.uk/tyres/205-14/205wr14-michelin-xwx.html

    I have had our first delivery for a while and i do have a few left, but we do have a whole heap of them coming in next week if anyone needs them They will have lovely fresh date codes. The 3 i have left today are 1921.
     
  10. prance

    prance Formula Junior

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    I know the spares were on smaller rims, 6 1/2 inch with possibly 185/14 Dunlop tires.. I've seen a spare out of an early 275gts that was a Dunlop 185/14 tire. The early GTB's may have also had 6 1/2 inch rims, which may have worked with 205/14 tires and someone may have upgraded that car to 7 inch rims I've never seen the drive tires on a GTB that were not 205/14.
     
  11. miurasv

    miurasv F1 World Champ

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    275 GTS, Short Nose 275 GTBs and early Long 275 GTBs have 6.5" wide rims. Later Long Nose 275 GTBs and 275 GTB/4s have 7" wide rims. This info has already been posted in this thread.

    The spare wheels were of the same size as the others and were used in rotation of the other wheels.

    From the Ferrari 275 GTB/GTS Owners' Manual.
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  12. Longstone Tyres

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    We have loads of the 205VR14 XWX now if anyone needs them.

    Borrani list 6.5" and 7".

    https://www.borrani.com/ferrari-wheels/275-gtb.html

    But i don't think i have coma accross anything that would make me think they had a different size spare, and i could undewrstand a thinner spare to save some boot space, but a different diamter tyre would be a b it tricky.
     
  13. marcow

    marcow Rookie

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    The modern tyres are not exactly the same size as the originals, as I have had a problem with the spare not fitting into the trunk on quite a few occasions. The problem is if you show the car and the spare is not the same size as the tyres on the car you may get penalized. On one or two cars when doing a full restoration I have made the area for the spare wheel ever so slightly larger to make sure the new spares fit. Very frustrating at times.
     
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  14. miurasv

    miurasv F1 World Champ

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    #39 miurasv, Jul 13, 2021
    Last edited: Jul 13, 2021
    Have you found this to be the case mainly on earlier short nose cars where the tyres were originaly 195, not 205 in width, and were therefore of smaller overall diameter?

    Some short nose cars have the tyre sizes listed as 195 x 14 and 210 x 14 for tbe same car.
     
  15. DWR46

    DWR46 Formula 3
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    Steve: For the short nose GTB, it is a width problem , not a diameter problem when trying to put the tire/wheel into the trunk. They were made for the 195 tire, and not the 205. You have to let the air out of the spare to fit it in the trunk.
     
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  16. TTR

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    :confused: ???

    … and hope that you’ll only need to replace it within hose reach of compressed air supply ? :D
     
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  17. marcow

    marcow Rookie

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    I have seen that on different models, 250 PF Cab and if I remember correctly I also had a problem on a Europa.
     
  18. DWR46

    DWR46 Formula 3
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    Same problem today on mid-60s Corvettes. They say the repro tires are the same size, but they are not.
     
  19. Longstone Tyres

    Longstone Tyres Formula 3
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    It is not just the not fitting with a modern tyre that is the problem. They don't give as good ride or handle as well as a proper period tyre.
     

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