Anyone running 335/30/20 rears?? | FerrariChat
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Anyone running 335/30/20 rears??

Discussion in '458 Italia/488/F8' started by Goonthree, Nov 20, 2016.

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  1. Goonthree

    Goonthree Karting

    Nov 28, 2010
    126
    Orlando
    #1 Goonthree, Nov 20, 2016
    On aftermarket rims? My other car runs 335/345 tires and be nice they use the same tires. It is about same height as stock rears.
     
  2. DK308

    DK308 F1 Rookie

    Aug 13, 2013
    2,738
    Europe, way north.
    Full Name:
    AB
    #2 DK308, Nov 20, 2016
    It can be done no problem. It's just a matter of offset. Many who use 21" use 355 section, so 345 will fit an have the OE diameter, and 335 will fit nicely as well.

    Maybe check if you can fit 265/30R20 or 275/30R20(OE diameter) up front. Adding so much rear width without adding front tyre grip, will often make the car push more. Wider fronts will dial down that understeer.

    If the wide fronts are able to fit, this is what I'd do in your situation.

    MPSS 275/30R20-345/30R20

    Or

    MPSS 265/30R20-335/30R20

    Either set on 9.5"x20" and 12.5"x20 rims.
     
  3. United458

    United458 Karting

    Dec 2, 2015
    212
    Chapel Hill, NC
    #3 United458, Nov 20, 2016
    can be done easily --- i have 355s on my spider...
     
  4. F12KID

    F12KID F1 Rookie
    Owner

    Nov 27, 2013
    2,578
    #4 F12KID, Nov 20, 2016
    I was about to do just this with sport cups on rear however it was strongly NOT advised as I was told can create some issues with the TC system and also, as you correctly stated, generate understeer due to the new wider/bigger section of rear tyre contact with The ground
     
  5. Vetsky

    Vetsky Karting

    Jun 2, 2016
    144
    Montreal
    Full Name:
    Jeff
    #5 Vetsky, Nov 21, 2016
    Agreed, I just ordered a set of wheels with 355's. Be aware they are expensive.
     
  6. DK308

    DK308 F1 Rookie

    Aug 13, 2013
    2,738
    Europe, way north.
    Full Name:
    AB
    #6 DK308, Nov 21, 2016
    If you stick with tyres close to the OE diameter, there will not be a TC issue. Who told you that? To explain it simply. The sensors work by measuring how fast the front and rear wheels turn in relation to each other. If the diameter of either the front or rears are changed significantly, it will cause ABS issues, as it's the ABS wheel speed sensor it affects. This is why the Speciale tyres won't work on an Italia or Spider.
    Also, the sensors don't know how wide the tyres are, and the TC system only "cares" when the tyre loses traction.

    As for the understeer, yup, that's exactly why the 265 or 275 section tyres will be a great addition. If that width will fit up front, a 458 with 275 fronts and 345 rears should make for one heck of a canyon carver. Unfortunately the MPSC2 is not available in the wider fronts, so it's a MPSS setup only if one wants wide fronts.
     

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