Weight transfer from body roll plays little role in handling since it is so small. That is a common misconception. The roll center is the coupling point between the sprung and unsprung masses. How lateral force is translated to the suspension members is what is playing the biggest role. It's not the actual change in cg. A higher rc transfers forces more through the suspension members themselves whereas a lower rc transfers more force through the springs. A lower rc actually has more chassis roll than a higher rc. You have to be careful as too high of a rc will cause jacking forces which will pick the suspension up in heavy cornering.
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