the opposite. the further you tuck the kingpins into the front wheels, the more responsive the car becomes.
i don't play with rear offset much. most systems designed to allow for that, don't change the lower shock locations appropriately, so the offset rear hubs provide for a much higher wheel rate, which tends to overshadow the actual offset change.
the above assumes the f/r track stays the same. if by 'offset' you are actually referring to track width, then the wider end will tend to have less traction.
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