I upgraded the rear sway bar with 20mm M5T Nurburgring rear sway bar. Wow, what a difference. I always felt my car understeer quite a bit. I tried stiffening the damper on the rear shocks but all that did was made the ride rough. Now, she feels very balanced. Even with snow tires still on! I can't believe I went this long without upgrading the sway bars. This is excellent upgrade for those who demand precise handling.