The best improvment I ever saw was when I got my bfg r-1's for my 88 pulsar. It turned a light good cornering car into a beast. You want to stop on a dime, do turns at 60, get some auto-x tires. For the money now a days you cant beet kumho victoracers, or what ever they are calling them now a days. With just those you will notice a SUPER HUGE improvment. -sean