thats coz theyre just expecting too much... the improvement in handling is minimal... most people will not feel it since they drive everyday like is a sunday.... but for spirited driving and cornering it can definitely be felt...the most significant gain for improving handling is ALWAYS the suspension setup. everything else like bars, tires, etc etc are just additional support.

resiliency...i was comparing with stock rims... most stock rims are utter crap... and those from P1 n P2 are worse since theyre from JRD...

aftermarket wheels tend to be stronger due to their build process... the metal is just simply better.
mythbusters probably cant work on this... coz they probably know jack about aggressive/spirited/track driving... should get race car drivers to do it like Best Motoring etc....

besides... look at JGTC cars... they are ALL (or almost all) running bigger wheels and low profile tires.