Tire diameter to handling question | FerrariChat

Tire diameter to handling question

Discussion in 'Technical Q&A' started by Auraraptor, Jan 15, 2004.

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  1. Auraraptor

    Auraraptor F1 World Champ
    Lifetime Rossa Owner

    Sep 25, 2002
    If one increases the overall diameter of the front in relation to the rear, does this promote understeer, while having a taller tire in the rear in relation to the front promote oversteer?

  2. Mitch Alsup

    Mitch Alsup F1 Veteran

    Nov 4, 2003
    It could create either understeer or oversteer depending upon a whole bunch of factors. However, if the rolling radius is not altered more than 0.25" out of the 26" diameter, you remain inside the window where the suspension was orriginally tuned.

    The way to alter the oversteer/understeer relationship is with ride height or with section width. Lowering the rear promotes understeer, raising the rear promotes oversteer. Wider rear tires promote understeer, wider front tires promotes oversteer. Try real hard to keep the original rolling radii,

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