Adjustable in the game Stock cars run power heavy-duty worm and pinion steering. Wheel lock determines how sharply your car turns when you turn the steering wheel. Set this value as low as you can to make each turn, but still feel comfortable. Superspeedways require less lock than road courses. Adjustable in the game Lower air pressure results in hotter tires and better grip, but faster wear.
Higher pressure leads to the opposite.
On ovals, the right-side tires run hotter than the left, so increase pressure in these tires to help even out tire temperature and grip. Increase wedge to decrease oversteer. Decrease it to alleviate understeer. Wedge should always be neutral for road racing.