I meant will I have to worry about bending or cracking the rim since I am going form a 15 inch to an 18 inch wheel which I assume causes more ride harshness and stiffness. My car is lowered and I thought with the stiffer suspension and super low profile tires, I might crack or bend the rims, if this is a big concern, I just wanted to know.
Thanks again for all of your help, I have had a great experiance with tirerack so far thanks to all your help.