Tramlining instability Ferrari ( probably in general) | FerrariChat
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Tramlining instability Ferrari ( probably in general)

Discussion in 'Ferrari Discussion (not model specific)' started by janrbh17, Jun 4, 2025.

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  1. janrbh17

    janrbh17 Rookie

    May 6, 2012
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    Jan R B Hansen
    #1 janrbh17, Jun 4, 2025
    Hi, just wanted to post this. I know there are some similar threads/ topics here. But this is regarding a problem I have had for many years. Very annoying tramlining. My car ( 512 TR) would just stear by itself in any direction. So always 2 hands on the steering wheel to correct it when it suddenly happened.
    Over the years I replaced all the bushings in the front, eventually the wheel bearings, the steering rack. And did alignement with extra "toe in". But for a long time I have suspected the tires. But Pirellis are the OEM tire and I was a bit reluctant to change. And my mechanic also wanted to keep the original Pirellis.
    But now I put on Michelin PS4 and the problem has been reduced to the point where I don`t notice it. It has transformed the car.
    So if there are people here that struggle with tramlining - go ahead and try Michelin PS. They are softer in the sidewall and therefore behave better on road.
    BR Jan Hansen, Norway
     
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  2. technom3

    technom3 F1 World Champ
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    #2 technom3, Jun 13, 2025
    Tires are the only part of your car that touch the road. They are crucial.
     
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  3. TheMayor

    TheMayor Ten Time F1 World Champ
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    #3 TheMayor, Jun 13, 2025
    Don't own an Alfa 4c!

    Great information.
     
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  4. JoeCab

    JoeCab Formula Junior
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    Joe C
    #4 JoeCab, Jun 13, 2025
    Even on our 4C, the switch from OEM Pirellis > Michelin PS4S was a huge improvement.
     
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  5. RedNeck

    RedNeck F1 World Champ
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    #5 RedNeck, Jun 15, 2025
    It's amazing how much tires can make a difference. I bought a car once and drove 3+ hours home. Had some cheap Kumhos, relatively new. On the highway I felt like I would lose it if I went over 50. Got home and put some decent tires on and the car drove completely different.
     
  6. RedTaxi

    RedTaxi F1 Rookie
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    #6 RedTaxi, Jun 16, 2025
    Agree on the PS4S. Also in the past on different cars directional tyres on the front cured it.
     

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