when running, large rear tires, as most of us do, there is more grip when the full tread width is in contact with the track surface, if designing in alot of camber gain, or alot of initial camber with a 335 rear tire, you are defeating the purpose of having that much rubber on the back end, this is true both on stick axle rear and irs. of course this is coming from a more competition/track view.
most alms gt cars, rolex gt cars etc with 11 and 12 inch wide rims, tune there chassis for around 1 inch of bump, both to keep mechanical grip levels high and to keep from having huge amounts of weight transfer.
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