Different track width front to rear has a definite effect on handling. This is a cut and paste from


EFFECTS OF TRACK-WIDTH ADJUSTMENT
FRONT TRACK-WIDTH
Wider
• Decreases front grip
• Increases understeer
• Slower steering response
• Use to avoid traction rolling
Narrower
• Increases front grip
• Decreases understeer
• Faster steering response

REAR TRACK-WIDTH
Wider
• Increases rear grip at corner entry
• Increases high-speed on-throttle steering
• Use to avoid traction rolling
Narrower
• Increases grip at corner exit
• Increases high-speed understeer