GT3 Control arms - help with shims

[Anker]

What tire pressures were you running, and how about your fromt sway bar.

The easiest way to reduce understeer is to install a stiffer front sway bar and increase the tire pressure in front.

Another "understeer" problem is going too fast into turns, not trail braking (shifting the weight to the front) and not powering out of the turns. A common beginner mistake, often encouraged by instructors is not to brake when you turn and only accelerate when going straight. You are not managing weight transfer if you do that. Yes, hard braking needs to be done before you turn, but some braking when you enter the turn is required for fast times and makes the car much more responsive.