I just looked at a review of the hankook tires and they suck. sidewall is too soft. For our heavy z's the stiffer side wall is a must . Also i was just looking at the Toyo Proxes T1R Tires before you mentioned that you had them. What is the side wall stiffness like and the noise. What other tires do you recommend that will grip better than the ones you currently have. I perfer not to buy cheap tires but will not spend over $200 for one tire. thanks