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E46 Scrub Radius vs Handling

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    #16
    I don’t think scrub radius is contributing to that issue. You might try trail braking a little in that corner to load the front or more front bar or more rear aero depending on how dialed it is in other situations
    ‘02 332iT / 6 | ‘70 Jaguar XJ6 electric conversion

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      #17
      Originally posted by Bry5on View Post

      Stock is about +12mm scrub radius by my math. Suspension model: https://cad.onshape.com/documents/a1...5d9001c1313b00
      edit: you can copy this model and add your mods to answer your mod question. The model is parametric and fully constrained.

      Ferraris have been known to run a close to 0 scrub radius, which helps to provide that talkative front end. A high scrub radius will dull your feedback and in extremely high cases, cause a feedback almost like binding or going ‘over center’ - I went this far on my old e31 and it was really unpleasant. Ultimately I dropped 30mm and 1” of tire and wheel just to get the feedback/scrub to a reasonable level on that car. Hope that helps.

      I run 46mm offset, 13mm scrub by the math in my e46 with a 245 tire on a 9” wheel. In practice it’s a bit lower than that statically due to some extra front negative camber. Super reasonable setup and nice feedback. I wouldn’t go below 40mm offset for a car that’s majority street personally.
      I'm running a 8.5 et38 up front with 245 tire. So probably about 21mm scrub?

      I have no complaints, but an extra 15mm would probably screw things up.

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