Complex sentence: As a vehicle ages the bushings will slowly harden and crack, resisting the motion of the bar, until the bar starts to squeak and creak and make popping noises anytime it rotates during turning, acceleration, or braking.
Split into simpler sentences: As a vehicle ages the bushings will slowly harden and crack, resisting the motion of the bar. Eventually the bar starts to squeak and creak and make popping noises anytime it rotates during turning, acceleration, or braking.