Understeer
Understeer is when the front tires lose grip before the rears, so the car turns less than you asked and pushes toward the outside.
Also called: push, plow, tight
In understeer, the front tires reach their limit first. You turn the wheel, but the car carries on wider than you intended, and the steering may go light. It is often described as the car pushing or plowing, and you can hear the front tires squealing or scrubbing.
Causes include entering too fast, turning too sharply, accelerating too early, or a setup that gives the front less grip than the rear. Most road cars are designed to understeer gently at the limit because it is more stable and easier to manage than oversteer.
The fix is counter-intuitive: more steering usually makes it worse, because the fronts are already past their peak slip angle. Ease off the throttle smoothly, unwind the steering slightly to let the tires regain grip, and accept a wider line. Next lap, enter slower.
Understeer scrubs speed and can carry you off the track at exit; understanding it helps you manage entry speed and steering.
The front tires run out of grip first. The car turns less than you asked. More steering makes it worse; easing the steering and the speed lets the fronts grip again.