Tire problem | FerrariChat

Tire problem

Discussion in 'Technical Q&A' started by Angelo348tb, Mar 26, 2006.

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  1. Angelo348tb

    Angelo348tb Karting

    Jan 31, 2006
    88
    Full Name:
    Angelo
    I bought and installed 360 wheels and tires on my 348tb.
    They look great but the rar tire seems to rub when I hit bumps on the road. The tire has a rubbing mark. This only happens when I drive aggressively and hit rough roads. I was told these wheels fit, why the rubbing, is it because I have a EURO model?? there suspension softer, any explainations or ideas.
    The tires at rear are 275x40x18, was 255x40x17
     
  2. Michael Everson

    Michael Everson Karting

    Nov 5, 2005
    224
    Norton, MA USA Earth
    Full Name:
    Michael Everson
    Are you using spacers? I had to take the spacers off that were behind my stock wheels. I have the same wheels as you but my fronts are 215-45-18 Are you sure you have 17s on the front?
     
  3. Angelo348tb

    Angelo348tb Karting

    Jan 31, 2006
    88
    Full Name:
    Angelo

    There are no spacers, car is a euro stock with 17's but now have 18's and yes my fronts are the same 215-45-18, it's the rear that rub
     
  4. Michael Everson

    Michael Everson Karting

    Nov 5, 2005
    224
    Norton, MA USA Earth
    Full Name:
    Michael Everson
    My rears are very close to the front of the wheel well opening but no where else. Maybe your car sits lower. Could you take a picture of it from the side? we can compare.
     
  5. BT

    BT F1 World Champ
    Lifetime Rossa

    Mar 21, 2005
    15,291
    FL / GA
    Full Name:
    Bill Tracy
    The US cars had a bigger offset on the rear wheels to give the later model 348 a wider track. Maybe the euro models used longer drive shafts? what was the offset on your stock 348 rear wheels?
    BT
     
  6. Angelo348tb

    Angelo348tb Karting

    Jan 31, 2006
    88
    Full Name:
    Angelo
    I am not sure what the stock 348 wheel's offset were but they seemed quite recessed as the US stock model. The height between the tires and rear panel seems ok, 2-3 inches. It seems closer toward front of the panel but the ubbing is happening at the top. Maybe the streets are real bad but it shouldnt drop that much??
     
  7. Angelo348tb

    Angelo348tb Karting

    Jan 31, 2006
    88
    Full Name:
    Angelo
    sorry, missed, here they are
     
  8. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    No, they increased the offest by adding material to the inside of rims, kind of like permanent spacers. They didn't do anything to widen the actual suspension. The only diffence on the axles was going to a sealed CV joint on the wheel side of the shaft, the length stayed the same.
     
  9. Angelo348tb

    Angelo348tb Karting

    Jan 31, 2006
    88
    Full Name:
    Angelo
    Again
     
  10. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    You probably are not running much negative camber, so the wheels don't tip in, they are more straight up and down. Whoever owned the car last probable had it aligned that way. This is good for helping to reduce the tires wearing out on the inside, but it takes away from handling. The stock springs aren't too stiff too give a more comfortable ride, but this let's the suspension travel more, and also reduces handling.

    You can have the insides of the fenders "rolled", or put in stiffer springs, or dial in some more negative camber.
     
  11. Mike in ATL

    Mike in ATL Karting

    Nov 2, 2003
    127
    Full Name:
    Mike
    #11 Mike in ATL, Mar 26, 2006
    Last edited by a moderator: Sep 7, 2017
  12. brim

    brim Guest

    Dec 20, 2004
    1,187
    Angelo,

    You have to mount the wheels with a bit more negative camber, and also have your fenders rolled slightly.

    It is a very easy and cheap procedure that I had done with my stock 360 when I put Novitec wheels on it.
     
  13. Angelo348tb

    Angelo348tb Karting

    Jan 31, 2006
    88
    Full Name:
    Angelo
    I will look into the negative camber, rolling ??? not to sure, who would qualify, a body shop???
    By the way the wheels look great, I can email you pics.
     
  14. brim

    brim Guest

    Dec 20, 2004
    1,187
    Definitely email some pics.

    Any good body shop will know exactly what fender rolling is. It's a very quick procedure that will stop the rubbing by giving you a bit more clearance.
     

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