To all experienced road course racers/lappers, I took my Fiesta ST to a lapping day for the second time last weekend. On this occasion I took it to a course that I am very familiar with. My findings are basically consistent with one of the reviews I read somewhere: The ST has a very sharp turn-in, but once turned in it has trouble generating enough grip to go through the corner at the speed that the turn-in would suggest it could. I feel there is too much front roll that is stressing out the outside front tire. I also drove my friend's brand new Focus ST and it exhibits much better roll stiffness and front end grip. But then that car has 235 front tires. So my questions is, if I can only upgrade one thing, would stiffer anti-roll bars help more? Or should I look at stickier tires and leave the sway bars stock for the time being? Thanks for sharing your experience/suggestions.