Speciale wheels and tires messing with traction control? | FerrariChat

Speciale wheels and tires messing with traction control?

Discussion in '458 Italia/488/F8' started by Lew L, Oct 14, 2014.

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  1. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    I just had my first annual service on my 2014 Italia. While being serviced, I had Speciale wheels and tires mounted. Now when cruising at about 60 mph the traction light comes on and the traction control activates.

    Has anyone else experienced this? I assume that it is the difference in diameter between the stock 295/35X20 rears vs the Speciale's 305/30x20 rears. But the diameter difference is maybe an inch, so that seems pretty close. Is there any way around this?
     
  2. windsock

    windsock Formula 3
    Rossa Subscribed

    Nov 29, 2006
    1,129
    the revolutions per mile is quite a bit different between the stock 458 wheel and the Speciale wheel. The incorrect size wheel and tire is interpreted by the ABS/Traction control as spinning rear tires. unless you know someone who can reprogram the ABS or make the Speciale ABS unit work, which is different then the standard 458 you can either go to the correct tire size or run with the Traction turned off. Keep in mind that even with traction turned off the ABS will not operate correctly either as the front tires will trigger a premature lockup reaction due to their slower speed during hard braking. this is going to really cause a lot of premature rear brake wear if driven in this configuration.
     
  3. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    Thanks. So far it only occurs in sport mode and not in race mode. However, I actually prefer the sport mode for my daily commute when listening yo the radio on the way to work (I.e. Treating it somewhat like a normal car.). It is my DD, so sometimes it's nice to dial it back from race and tool around in sport.

    Any one else with Speciale wheels/tires on their standard 458 have this issue. I guess that I could mount the stock rear tires on the Speciale wheels.
     
  4. 458trofeo

    458trofeo F1 Rookie

    Feb 4, 2013
    4,426
    City of Angels
    Full Name:
    101 aki
    Interesting issue..

    I think Chris (synergy) has speciale wheels on his Italia, you might want to pm him and ask him if he is experiencing the same traction occurrence

    best
     
  5. pride355

    pride355 Formula Junior

    Apr 16, 2006
    388
    Istanbul/Turkey
    Full Name:
    MOT
    I just have the speciale size front tires on my italia and has no issues with traction control.
    The speciale rear tire size is significantly different than italia size; so I'm waiting for Pirelli to offer Trofeo-R tires in 305/35/20 size.
     
  6. REALZEUS

    REALZEUS F1 Veteran

    Feb 16, 2011
    8,299
    Bournemouth, UK
    That's a 3.2% difference, which makes those wheels inappropriate for your car.
     
  7. rjn21

    rjn21 Karting

    Dec 3, 2013
    192
    UK
    At a recent pilota event, an Australian gentleman mentioned he had tried to use different wheels / tyres on his 458. He struggled with the same problem and as I recall couldn't find a solution other than to revert to OEM 458 sizes.
     
  8. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    Would the Michelin Pilot Sport 2Cups in 325/30x20 fit on Speciale wheels on an Italia? They have a diameter of 27.7. Or do I have to go back to the stock 295/35x20s?
     
  9. 2Veloce

    2Veloce Formula Junior

    Aug 8, 2014
    566
    annapolis, maryland
    Full Name:
    Al
    I considering changing out my wheels when my 458 spider arrives in January. Will the dealership reprogram the traction control to the "speciale " specifications? Also does anyone have a picture of the nero 458 spider with the flat black speciale wheels?..thanks Albert
     
  10. rjn21

    rjn21 Karting

    Dec 3, 2013
    192
    UK
    Doubt the dealer has access to that level of coding. DEIS can't program a module other than as the chassis specific module ie plain 458. Unless there is somewhere out in the cloud a cracked Ferrari coding software like BMWs E-sys, they won't be able to do it.
     
  11. DK308

    DK308 F1 Rookie

    Aug 13, 2013
    2,738
    Europe, way north.
    Full Name:
    AB
    #11 DK308, Oct 16, 2014
    Last edited: Oct 16, 2014
    Someone here recently had his 458 mounted up with Speciale spec wheels. He had the ECU reprogrammed. I can't remember who it was. There has been other posts regarding this issue. Problem is that the original wheels are 26.5" dia. front, and the rears 28.1". Now you have 26.8" front and 27.2" rear, it's a huge difference. Not only that, the rear of your car now sits 15mm lower in relation to the front, compared to stock, as your front has been lifted 3.8mm and your rear lowered 11,43mm due to the different radius. Can't help but wondering whether this will affect the car negatively at high speed, as it could allow more air pressure to build up under the car and create lift on the front axle. It also changes the balance of the car and the aerodynamic profile. Whether it's enough to be noticeable, I don't know. Lowering the front 15mm would take care of that.
     
  12. DavidJames1

    DavidJames1 Formula 3

    Mar 6, 2010
    1,772
    Bangkok, Thailand
    Just curious as to why you would do that given that it likely changes the dynamics of the car - was it simply because you liked the look better? Having done it - any regrets or will you go down the route of reprogramming if you can?
     
  13. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    I like the looks much better. I had the diamond finished sport wheels, but prefer the deep offset and the light weight of the Speciale wheels. I went with the Speciale Michelins because of what I read about them. The simplest solution will be to mount the stock rear tires onto the Speciale rims. It's really not a big problem. I was just looking to see if there were other alternatives.
     
  14. dlopez001

    dlopez001 Formula Junior

    Sep 25, 2007
    908
    CA
    Full Name:
    DL
    So you would run MPSS in the front and MPSC2 in the rear? Is it a good idea to mix these two tires?

    I ask because I also like the wider look & stance of the Speciale wheels. Although I may just keep my stock wheels and add 15mm spacers.

     
  15. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    Sure. The two types of tires are fairly close.
     
  16. DavidJames1

    DavidJames1 Formula 3

    Mar 6, 2010
    1,772
    Bangkok, Thailand
    Would be interesting to see how it looks - I guess a bit more aggressive?
     
  17. synergy

    synergy Formula Junior

    Aug 5, 2007
    517
    Austin Texas
    Full Name:
    Chris
  18. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    How about in sport mode when cruising on highway? It happens when I hit about 62 mph on a smooth road. It doesn't happen in race mode (probably because race allowance little more slippage). It also does not happen under acceleration. Also, the speedo readings are now high, but that is simply a function of having a smaller diameter rear tire.
     
  19. dlopez001

    dlopez001 Formula Junior

    Sep 25, 2007
    908
    CA
    Full Name:
    DL
    Specifically which Micheline tires and what sizes? Are we talking OEM Speciale MPSC2 or MPSS in different size or??

     
  20. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    OEM Speciale Michelin PS2 Cups. 305/30X20.
     
  21. DK308

    DK308 F1 Rookie

    Aug 13, 2013
    2,738
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    dlopez001 was asking Synergy to specify which tyres, as he did not provide info about which Michelins he is using.
     
  22. dlopez001

    dlopez001 Formula Junior

    Sep 25, 2007
    908
    CA
    Full Name:
    DL
    Correct and thank you for adding clarity to my question.
     
  23. synergy

    synergy Formula Junior

    Aug 5, 2007
    517
    Austin Texas
    Full Name:
    Chris
    Just to be clear, I used oem 458 tires on the Speciale wheels. No traction control issues whatsoever but I will try 62 MPH tomorrow and see what happens.
     
  24. Lew L

    Lew L Formula Junior

    Jan 27, 2006
    359
    There should be no issues with Italia OEM tires on Speciale wheels.
     
  25. DK308

    DK308 F1 Rookie

    Aug 13, 2013
    2,738
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    AB
    In that case, yes, 235/35R20 front - 295/35R20 rear. No problems of course.

    For track use, I'd look into the Pirelli Trofeo R in OEM size and forget about all the issues with using the OEM Speciale tyres on the 458 Italia.
     

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