Originally Posted by docmanakos
Polyurethane bushings are horrible, they squeak all the time, they make your ride much, much harder, and do not make your handling better. Putting firmer less deflectable bushings have absolutely nothing to do with the three most important things concerning handling. Adhesion to the road, which is determined by your tires. Roll and rebound, which is determined by your shocks, swaybars, springs, suspension geometry. sprung and unsprung weight. Suspension balance, this is an area that very few of the "bolt on" enthusiast know much if anything about.
Putting in firmer bushings and subframe connectors, or strut tower braces, do nothing unless your suspension is so firm that now all the stresses and looseness in your suspension is transfered and due to those area's (the weak link the the chain concept). Just because the race only cars have it doesn't mean it's good for you.
Docmanakos@aol.com
Have to disagree with you there. Well, except for the harsher ride and squeaking, that is true. Polyurethane bushings reduce play which is why it's important. If you have play, you will slight unpredictable variations in suspension geometry as a function of road load, acceleration, bump load, etc. Bushings aren't the only suspension thing to look out for, but they are still important.