I recently purchased a '91 NSX with stock Yokohamas on it. While driving a bit too agressively on a 3 lane traffic circle in Long Beach, Ca. the tail broke out violently giving me (and my unsuspecting passenger) a 3 phase underwear checker (correct to the right, correct to the left, correct to the right again, exit traffic circle and go check underwear). I was powering on (in second, I believe) when it broke away and as I said before, there was nothing subtle about it. I checked the tire pressure later and found the rear tires to be 37-38 pounds each. Ridicule and driving tips aside, how much difference will meatier tires make? I am currently researching Rims and tires for the right look and size.